Answers
All of an organism's characteristics are inheritable which evolves over millions of years. An example of this is the modern day horse's foot.
What is Evolution?This is referred to as the change in the heritable characteristics of biological populations over successive generations and it occurs as a result of the changing environmental conditions which boost the chances of survival of organisms.
This leads to the prevention of the extinction of species in the ecosystem and an example is modern day horse's foot in which they lost their side toes and developed a single hoof as a result of them needing to cover more ground for grazing.
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Related Questions
give any character of gene?
Answers
Answer:
A gene is composed of a sequence of nucleotides, which are the building blocks of DNA. Each gene contains the information needed to construct a specific protein, which performs a specific function in the body. Genes are passed from parent to offspring and contain the instructions that make each species unique.
Explanation:
Who is promotor of binomial system of nomenclature
Answers
Answer: Linnaeus
Explanation: Linnaeus established the practice of binomial nomenclature—that is, the denomination of each kind of plant by two words, the genus name and the specific name, as Rosa canina, the dog rose.
list two differences between dominant and recessive trait and what present in plant in F2 generation by around in mental cross between round and wrinkled plant
Answers
A round seed phenotype and the dominant allele for the roundness trait were present in three-fourths of the f2 plants. Dominant covers the trait of recessive.
What is dominant?An allele is a gene form that can appear as a pair and exhibit either a homozygous or heterozygous phenotype of a characteristic.
Both dominant and recessive forms of the trait can be expressed by these genes. When two organisms are crossed, the F2 generation of the progeny exhibits three phenotypes: homozygous dominant, heterozygous dominant, and recessive.
Therefore, the roundness trait was present in three-fourths of the f2 plants.
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Compare the punnet squares you constructed in Activity 4, "Breeding Corn", with the punnet squares you constructed in this activity. By answering the following questions, show how the possible outcomes of a cross for one trait help analyze two traits.
A. How did you need to change the punnet square to consider two traits?
B. How would you need to change the punnet square if you were to consider three traits?
Answers
Punnett squares represent the possible genotypes of the offspring according to the parental's gamete combinations. The number of gametes depend on the number of alleles and traits considered. A) New rows and columns were added to the square because each parent contributed with four types of gametes (4 rows and 4 columns). B) The square would be constructed with eight rows and eight columns.
What is a Punnett square?
The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett squares are composed of columns and rows in which all the different potential gametes are placed.
columns represent one of the parental gametes, and rows represent the other parental's gametes.The intersection between each column and row suggests a possible genotype among the offspring.
The number of columns and rows will depend on the number of genes involved in the cross. We can use the formula 2ⁿ to figure out how many gametes are possible (2 is the number of alleles, and n is the number of genes). Assuming diallelic genes,
If we consider only one gene, two types of gametes are possible (2¹). If we consider two genes, four types of gametes are possible (2²). If we consider three genes, eight types of gametes are possible (2³)
Punnett squares shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example, we need to compare a punnett square in which we consider only one gene with a punnett square in wich two genes are considered.
From activity 4: Punnett square
Cross: Purple with yellow
Parentals) PP x pp
Gametes) P P p p
Punnett square)
P P
p Pp Pp
p Pp Pp
F1) 100% purple kernels, Pp.
Cross: Heterozygous purple kernels from F1
Parentals) Pp x Pp
Gametes) P p P p
Punnett square)
P p
P PP Pp
p Pp pp
F2) 75% Purple (PP + Pp) and 1/4 yellow kernels (pp)
In these crosses, we only consider one diallelic gene that expresses complete dominance.
Punnett squares are composed of two columns and two rows in which both types of gametes are located.
Now, we need to consider two genes (P and S), which means four alleles are involved and four type of gametes are possible.
Cross: Between two dihybrid individuals
Parentals) PpSs x PpSs
Gametes) PS, Ps, pS, ps PS, Ps, pS, ps
Punnett square)
PS Ps pS ps
PS PPSS PPSs PpSS PpSs
Ps PPSs PPss PpSs Ppss
pS PpSS PpSs ppSS ppSs
ps PpSs Ppss ppSs ppss
F1)
9/16 individuals are expected to express both dominant traits (PPSS, PpSS, PPSs, PpSs)3/16 individuals are expected to express only one dominant trait (PPss, Ppss)3/16 individuals are expected to express the other dominant trait (ppSS, ppSs) 1/16 individuals are expected to express both recessive traits (ppss)Now, we need to compare Punnett squares from activity 4 (one trait) with this new Punnett square (two traits), and answer the questions,
A. How did you need to change the punnet square to consider two traits?
Since we consider two traits, we need to add rows and columns according to the possible gametes. The new punnett square must have four columns and four rows (2ⁿ = 2² = 4).
Remember that all the possible gametes depend on the number of possible allelic combinations.
B. How would you need to change the punnet square if you were to consider three traits?
If we consider three traits, we need to construct a Punnett square with eight columns and eight rows (2ⁿ = 2³ = 8).
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If a solution is 8% solute, it is [x]% solvent
Answers
If a solution is 8% solute, that means 8% of it (or 8/100ths) is made up of the stuff you added to it. We know that the whole solution is 100%. Therefore, we need to subtract 8% from 100%, which gives us 92%. We know this is correct since you can't have a less than 100% solution, since it exists wholly.
92% should be your answer.
Can someone help me with this
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6.The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is visually represented in a spectrogram.
What purpose does a spectrogram serve?The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is represented visually in a spectrogram. One can observe how energy levels change over time in addition to determining whether there is more or less energy, for instance, at 2 Hz vs. 10 Hz.
How should a spectrogram be read?The vertical axis or y-axis of the spectrogram view shows frequency in Hertz, the horizontal axis or x-axis denotes time (exactly like in the waveform display), and brightness denotes amplitude. The sine wave is represented by the bright orange curve while the background is black, which represents silence.
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how is the information between our dna structured
Answers
The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
What is cladogram?A cladogram has been an evolutionary tree that diagrams the ancestral relationships amongst organisms. DNA sequence analysis of the hemoglobin alpha gene shows that humans and chimpanzees have a more similar sequence to each other than they do to the gorilla’s DNA sequence.
Analogies structure has been body parts that have a similar function but differ in structure. All vertebrate embryos have a tail and gill slits at some point during embryonic development.
Therefore, The similarly alongside the cladogram you move,the greater variations in DNA the organisms have compared to the common ancestor.
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Which of the following is not a good method in examining fossils anatomical features of
living organisms?
O a. Homologous structures
O b. Vestigial structures
O c.
Index fossils
O d. Analogous structures
Answers
Answer:
d. Analogous structures is not a good method in examining fossils anatomical features of living organisms.
Explanation:
Analogous structures are physical characteristics that are similar in different organisms due to convergent evolution, rather than being inherited from a common ancestor. While analogous structures can provide valuable information about the environment and adaptations of living organisms, they are not helpful in examining the fossils of ancient organisms because they do not reflect the evolutionary relationships between different species. Homologous structures, vestigial structures, and index fossils are all useful methods in examining fossil anatomy, as they can provide insights into the evolutionary relationships and characteristics of ancient organisms.
examples for classification
Answers
Answer: Here are a few examples of classification:
Explanation:
Organizing a library's books by genre (e.g. fiction, non-fiction, children's books, etc.)
Sorting clothing items by size (e.g. small, medium, large)
Grouping types of food based on their ingredients or cooking methods (e.g. vegetarian, vegan, gluten-free)
Please help!
1.) Explain why the term cycle is used to describe the biogeochemical cycles.
2.) Compare and contrast the carbon and nitrogen cycles. Specifically, identify which happens when either exists in very large quantities in the environment.
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2.) The carbon cycle and the nitrogen cycle are similar in that they both involve the circulation of elements through the environment, but they differ in the specific elements they involve and the processes through which they circulate. The carbon cycle involves the circulation of carbon through the atmosphere, oceans, and land, while the nitrogen cycle involves the circulation of nitrogen through the atmosphere, soil, and living organisms.
One key difference between the carbon cycle and the nitrogen cycle is the way in which these elements exist in very large quantities in the environment. When carbon exists in very large quantities in the environment, it can contribute to greenhouse gas emissions and contribute to climate change. On the other hand, when nitrogen exists in very large quantities in the environment, it can lead to problems such as eutrophication, which occurs when excess nitrogen in waterways leads to an overgrowth of algae and other aquatic plants. This can lead to decreased oxygen levels in the water, which can harm or kill aquatic life.
The graph shows the line of best fit for data in a scatterplot.
What does the line of best fit indicate about the correlation between the variables?
Answers
Answer: B
Explanation: Trust
How do Demetri's results show that digestive enzymes are crucial to maintaining homeostasis in the body?
Answers
In addition to breaking down food so that the nutrients may be absorbed, enzymes also generate vitamins like biotin and vitamin K and protect the body from dangerous microorganisms.
What is homeostasis?
Biological system's ability to self-regulate and maintain stability while responding to shifting environmental factors is known as homeostasis.
The body needs a steady supply of nutrients from food that has been digested. They are crucial for maintaining health and carrying out bodily tasks. The body may absorb and use food that has been broken down by the digestive system.
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2. Which is probably most responsible for the
formation of this landform?
wind
water
plants
animals
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The most likely factor in the creation of this landform is wind. The horizontal movement of air caused by a pressure differential between two locations is known as wind.
What does wind mean in both senses?Wind is the flow or rush of winds or an air stream, and it corresponds with bend and tend. The metaphorical term "wind" can also refer to a force that drives social or political change. A person who has run out of energy is described as winded. The word "wind" can also refer to a person's breath.
Why does wind exist?The uneven burning of the Planet by both the sun and also the Earth's rotating motion result in wind, which is the air's movement. Light breaths to natural disasters like hurricanes and tornadoes are all types of winds.
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Photosynthesis is the critical process for life to exist. On Earth, it is certainly the
fundamental biological process that all forms of life rely on. This is a process is
carried out by most plants, algae, and some cyanobacteria. The process has
these organisms take in carbon dioxide, water, and minerals. Then with the help of
sunlight it creates sugars that provide the organism nourishment and life-giving
oxygen.
What is the main idea of the above passage?
Answers
Answer: Photosynthesis is the critical process for life to exist.
Explanation:
The main idea is on the first line.
You can see all the information afterwards are leading to the explanation of the process of photosynthesis.
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In humans, brown eyes are dominant to blue and brown hair is dominant to blonde. Cross a homozygous dominant brown-eyed blonde man, with a blue-eyed and heterozygous brunette woman
Answers
Studying the anatomy of different organisms allows scientists to determine how different species have evolved over time. Which type of anatomic structure are bird wings and butterfly wings when compared to each other?
Answers
Answer:
Analogous structures
Osmosis is the passive transport of what substance
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Answer:
Osmosis is the passive transport of water molecules across a selectively permeable membrane. In osmosis, water moves from an area of high concentration (high water potential) to an area of low concentration (low water potential) in order to balance out the concentration on both sides of the membrane. This process can be observed in living cells, where the membrane surrounds the cell controls the flow of water and other molecules in and out of the cell.
In simple words, Osmosis is a type of diffusion that specifically refers to the movement of solvent molecules through a selectively permeable membrane. It is a fundamental concept in biology and is crucial for the proper functioning of cells and organisms.
Which step in photosynthesis does not need light?
Answers
Answer: Dark Reaction
Explanation: Its the second stage of photosynthesis and it does not require light.
A student pours a spoonful of dirt into a cup of water. The water and dirt are stirred together. The water turns a light brown color. Some dark pieces float to the top of the cup and another dark layer forms on the bottom of the cup. Which statement BEST describes the contents of the cup?
Answers
The statements described the contents of the cup is that it is a mixture.
What is the cup?Let us notice that the question that we have here is incomplete but to the best of my ability I would try to explain the concept that is involved here. We know that a mixture would imply any combination of the substances that are not chemically combined together.
We can see that both the water and the dirt are independent substances. They do not mix up at all when we put the dirt in the water. They would continue to be separate from each other although they have been mixed together.
Hence, we can see that putting the dirt and the water in the same place would only lead to the production of a mixture of substances as we have described in the answer stated here.
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Pentane with molecular formula C5H12, exists in three isomeric forms. One shows linear carbon chains, another has one -CH3 groups present on the third carbon atom, and the third has two -CH3 groups present on the second carbon atom. What types of isomers are these?
Answers
Explanation: In first isomer, it has linear structure . In second one , one methyl group is relocated on third carbon of that linear chain which means the chemical formula of the compound pentane doesn't change but the structure change from linear to secondary to tertiary structure.
A plant stem's two main functions are to support the leaves and to transport materials
between roots and leaves. As a stem develops, it possesses three types of permanent
tissues: surface tissue, ground tissue, and vascular tissue. The surface and ground
tissues support and give structure to the plant. The vascular tissues are the transport
systems of the plant. The vascular tissues usually exist in one of three patterns and are
known as the phloem and xylem.
Both the xylem and phloem are made up of several different types of cells that make up
transport tubes for needed nutrients. In general, xylem nutrients (sap) travel from the roots
to the rest of the plant. Phloem sap is derived from photosynthesizing leaves and from
there is carried throughout the plant.
What would we be able to study by injecting a nutrient dye into the root of a plant?
A. phloem sap transport
B. pith and cortex cells
C. all vascular tissues
D. xylem sap transport
OE. total plant photosynthesis
Answers
what is chromosomes
Answers
Answer:
a chrosome is made up of proteins and DNA organized into genes each cell normally contains 23 pairs of chrosomes.
Chromosomes are structures formed by a DNA molecule associated with protein molecules. In prokaryotic cells, we observe a circular chromosome; in eukaryotes, chromosomes are linear and located inside the nucleus.
A hypothesis that is scientific must have a test for proving it
Answers
Answer:
True
Explanation:
If it is a scientific hypothesis, then it has to be tested.
What percentage of the population can determine their blood type from
saliva, tears,sweat, or milk? (Numerical answers only) thanks
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About 80% of the population can determine their blood type from saliva, tears, sweat or milk. These are known as secretors, and they refer to the fact that antigens present in the blood can also be found in bodily fluids like saliva.
What are antigens?Your immune system uses antigens as markers to determine whether or not something in your body is hazardous. Viruses, bacteria, cancers, and healthy bodily cells all include antigens. Antigen testing is carried out to identify viral infections, keep an eye on specific illnesses, screen for them, and ascertain a donor's compatibility with a transplant.
What are secretors?The term "secretor status" describes whether water-soluble ABO blood group antigens are present or absent in a person's body fluids, including saliva, tears, breast milk, urine, and semen. People are classified as secretors or non-secretors depending on whether they secrete certain antigens in their body fluids.
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The autonomic nervous system is the part of the peripheral nervous system that is responsible for
1. skeletal muscle movement.
2. involuntary bodily functions, such as sweating.
3. light, sound, taste, and smell detection.
4. new cell development.
Answers
Which class of drugs reduces pain?
Steroids
Hallucinogens
Depressants
Narcotics
Answers
Answer:
Narcotics
Explanation:
Narcotics, or otherwise commonly known as opioids are massively known for pain relief. There's opioid epidemic here in US b/c people are abusing the drug at extremely alarming rates. You might have heard of codeine, morphine and fentanyl, these are some of the most potent and dangerous drugs if used without proper prescription.
traditional application of biotechnology
Answers
Numerous applications of biotechnology exist, including those in medicine, energy production, food processing, waste management, and many others.
Gene therapy, a method to correct genetic defects in an embryo or kid, is a valuable application of biotechnology in the medical industry. Other applications of biotechnology include the usage of various equipment like the ECG and EEG. Similar to energy generation, biomass production falls under the category of biotechnology. Biotechnology is used in enterprises to process food utilizing a variety of scientific methodologies, including engineering techniques. Modern biotech is the controlled manipulation of genes and live tissues to produce new tissue, as opposed to traditional biotech, which uses natural organisms to produce or modify food or other valuable goods for human use.
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Adults can best help young children learn movements by
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Adults can best help young children learn movements by Introducing toys that children can push and pull. You can use bright colors can also be helpful.
Ways adults can best help young children learn movements are:Providing Toys and equipments children can push and pull.Practics some fun games with them eg football.Play the same games repeatedly with them. Learning to take turns is an important social skill best learned through physical play. Stay close by, pay close attention and watch out for risks. Put markings on the floor to increase a child’s physical activity.Provide enough space to run around.ensuring a safe play space and safe toys for the child. When the child is really engaged in play on their own, let them be.Learn more about learn movements on
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what type of transport is used for glucose in blood and intenstinal cells
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HELP LIMITED TIME!!!!!!!!!!!!!!!
Which process directly adds carbon into the atmosphere?
Select one:
1, increasing plant populations
2, burning fossil fuels
3, forming sedimentary rock
4, decreasing animal populations
Answers
Answer:
2, burning fossil fuels
Explanation:
When fossil fuels such as coal, oil, and natural gas are burned, they release carbon dioxide into the atmosphere. This process increases the concentration of carbon dioxide in the air, which is a greenhouse gas that can trap heat and contribute to global warming.