the punnett square below shows a cross between a pea plant with yellow seeds and a pea plant with green seeds
If mating produces 100 offspring, about how many will have yellow seeds?
A. 25
B. 50
C. 75
D. 100
life iscience 7th grade
Answers
Answer:
D
Explanation:
The yellow pea is dominant so if it is crossed with a pure recessive then they will all be yellow
According to Punnett Square, if mating produces 100 offspring, then all of them will have yellow seeds. Thus, the correct option for this question is D.
What is the Punnett Square?The Punnett Square may be characterized as a kind of table in which all of the plausible consequences for a genetic cross between two individuals with known genotypes are systematically demonstrated.
According to the question, there is a homozygous dominant genotype of one parent when crossed with the heterozygous genotype of other parents, then the genotypes of resultant offspring must carry at least one dominant allele which governs the phenotype of the entire offspring.
Therefore, according to Punnett Square, if mating produces 100 offspring, then all of them will have yellow seeds. Thus, the correct option for this question is D.
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Which are characteristics of a prokaryotic cell? A. Single cellular, has nucleus.
B. Multicellular, has nucleus
C. Single cellular, has no nucleus.
D. Multicellular, has no nucleus
Answers
__________ is the water and dissolved substances that are not taken up by the cells and remain between the cells.
a) Lymph
b) Plasma
c) Hemoglobin
d) Thymus gland
Answers
Answer:
a) Lymph
Explanation:
Lymph is the water and dissolved substances that are not taken up by the cells and remain between the cells. It is a clear, straw-colored fluid that is found in the lymphatic system, which is a network of vessels and nodes that helps to circulate immune cells and defend the body against infection and disease.
Plasma is the fluid component of the blood that contains proteins, hormones, and other substances. It is a yellowish fluid that makes up about 55% of the total volume of the blood.
Hemoglobin is a protein found in the red blood cells that carries oxygen from the lungs to the tissues of the body. It is responsible for the red color of the blood.
The thymus gland is a small, triangular-shaped gland located in the upper chest. It is an important part of the immune system and plays a role in the development and maturation of T-lymphocytes (T cells).
Answer: lymph is the water and dissolved substances that are not taken up by the cells and remain between the cells.
3. Which level in the energy pyramid represents the secondary consumer
Which level in the energy pyramid represents the tertiary consumer
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Producers
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Trophic level 4 represents the Tertiary consumer
The HPA axis of the endocrine system works together with the sympathetic nervous system to increase an individual's heart rate, blood flow, and blood sugar levels during times of stress. This stress response is also referred to as the
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Answer:
Adrenaline rush aka fight or flight response
Explanation:
Epinephrine adrenaline and norepinephrine a release to focus attention on the task at hand heart rate and blood pressure increase delivering oxygen to the muscles for flight. The eyes take in more light to increase visual acuity and more sugar is released into the bloodstream to increase energy. Functions like digestion, reproductive, and urinary system are slowed
The mass of an unidentified rock is 27.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.
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Why are Chromosomes arranged in pairs?
A. One chromosome is from the mother, and the other is from the father.
B. DNA is a double helix.
C. The chromosomes are split more easily.
D. Genes can be dominant or recessive
Answers
Answer: B
Explanation: because the dna are a double helix and do have a chance to split a little more and let me know if you passed
Site 3: http://www.experiment-resources.com/darwins-finches.html
Read the first two sections "Darwin's Finches" and "The Galapagos Islands"
5. Did Darwin first believe that each finch he found was a different species? Was he right or wrong?
6. How did organisms arrive at the Galapagos Islands?
Site 4: http://www.biologs-online.org/2/12 selective breeding.html
7. Why is selective breeding useful to farmers?
8. What does it mean to selectively breed an organism?
Site 5: Vereesforlife.cz forest forest-ecologica
9. What is mimicry? How does mimicry benefit an organism?
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Answer:
Have a good day!
Explanation:
What is an ecosystem and what are its parts and functions?
What can challenge an ecosystem?
What are the roles of the water and food cycles in an ecosystem?
Answers
An ecosystem is a structural and functional unit of ecology where the living organisms interact with each other and the surrounding environment. In other words, an ecosystem is a chain of interactions between organisms and their environment.
Answer:
An ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue.
Parts & Functions Of an Ecosystem
The functions of the ecosystem are as follows: It regulates the essential ecological processes, supports life systems and renders stability. It is also responsible for the cycling of nutrients between biotic and abiotic components. It maintains a balance among the various trophic levels in the ecosystem.
What are the major parts of an ecosystem? An ecosystem includes soil, atmosphere, heat and light from the sun, water and living organisms.
Challenges For An Ecosystem
Some of the primary challenges include, but are not limited to, habitat loss, climate change including sea level rise, and levee stability.
The Role and Function of Water
Water cycle have several impacts on the nature - it takes part in weather, erosion and watering plants.
In short term it is positive, to see green grass and trees, not just bonedry dead nature.
In longer term we can see weather changing, clouds made of tiny drops of water coming and leaving - changing humidity (important for fungi and liches), local temperature changes etc.
Longest takes erosion and it is mostly about changing soils structure and nutritients for plants. Erosion can be also seen on riverbeds - in soft rocks/soils being wider, in harder rocks narrow. Also sedimentation in delta is important for development of border ecosystems.
Water makes organisms live and rocks move, that is the importance of water cycle.
Have a wonderful day! :-)
There were many factors that affected people who lived in the Great Plains during the Dust Bowl era. What was the main factor that drove people from the Great Plains?
Answers
Answer: The Dust Bowl was caused by several economic and agricultural factors, including federal land policies, changes in regional weather, farm economics and other cultural factors. After the Civil War, a series of federal land acts coaxed pioneers westward by incentivizing farming in the Great Plains.
Explanation:
1) Manifest Destiny: The US Government wanted settlers to move onto the Plains as they needed the land to be settled and farmed and for communities and towns to grow up and expand. This was needed if the USA was to be a rich and successful country. The government therefore promoted the idea of Manifest Destiny.
What evidence have you discovered to explain how cells are organized in the body, similar to the way dots in pointillism art is organized.
Answers
Answer:
I'd have to say that cells are grouped by function and specialty. Many of the same type of cell are joined in a common task. Muscle cells are joined to form a specific task. Different cells in the body form into different organs and structures to form the whole body.
In art, pointillism uses dots of various sizes and colors. These dots are arranged so as to produce a specific visual effect. The entire work is composed of many individual points to form the whole picture.
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Explanation:
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Explanation:
It talks about a relevant factor in a local state. More and more trees are being chopped down today. This can make a community lack natural and fresh air.
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Answer:
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Explanation:
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Answers
Answer:
Fraternal twins are dizygotic and Identical twins are monozygotic.
Explanation:
Fraternal twins are dizygotic, meaning that they developed from two different eggs fertilized by two different sperms. Their genetic code is as similar (or dissimilar) as any other siblings. Identical twins are monozygotic, meaning that they developed from the same fertilized egg, and so have nearly identical genetic code.
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Answer:
wave b has the higher frequency
Answer:
b wave has the higher frequency
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It can be concluded that the mass of salt and water gets lighter as the salt dissolves.
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A tundra is dry and cold and a desert is dry and hot.
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A. chloroplasts
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An eagle on a tree branch sees an injured squirrel 50 meters away on the ground. The eagle then flies from the tree to prey on the injured squirrel. Which of the following best describes what happened with the eagle before it started to fly toward the squirrel?
A.
The eagle was born with the ability to prey on squirrels, so no brain activity was required.
B.
The eagle's brain recognized the squirrel as prey.
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B.
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Answer:
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The proposed solutions that could lessen the damage of potential earthquakes are establishing the ledge barrier on shelves, always anchoring the large appliances to walls employing protection cables or straps.
What is Earthquake?An earthquake may be defined as an impulsive violent trembling of the ground, generally causing tremendous devastation, as an outcome of motions within the earth's crust or volcanic action.
The costs of proposed solutions are a little bit expensive, while it results in the benefit to save and escape your life from earthquake activity to a larger extent.
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Please help. This test is timed and this course is way too hard. I will mark Brainliest if you have the best answer! No random answers though. Only answer if you actually know the answer. Or else I report you.
How do the temperaments of cows and bulls compare?
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Answers
Answer:
C
Explanation:
Bulls are a more extreme version of a cow. A cow is like a mother who cares for her children while a bull is like a rowdy person who does weird and unpredictable things at times. That's why when people hear the word wild cow, they don't usually get frightened but when they hear the word wild bull, they kind of get afraid.
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Answers
Select the correct words to complete the following statement.
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a
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d
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Answers
Answer:
c Compaction and cementation
Explanation:
Explanation:
When sediment is compacted due to weathering and age, they are slowly turned into sedimentary rock.
27 points
Please need help
The picture shows a Single-celled organism that has a nucleus and organelles, lacks a cell wall, and obtains food by eating other organisms. The organism also has cilia that it uses to move through water. Which kingdom should this organism be classified?
Science
Answers
Protista
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How is this possible if the Law of conservation of Mass says that Mass can neither be created or destroyed?
Answers
Answer:
according to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. Hope this helps! :)
How are antibiotics different from vaccines?
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Answer:
Both vaccines and antibiotics provide strong protection against germs that cause infections. Vaccines strengthen your immune system so infections can't get started, whereas antibiotics help fight an infection that is already making you sick.
Explanation:
Both vaccines and antibiotics provide strong protection against germs that cause infections. Vaccines strengthen your immune system so infections can't get started, whereas antibiotics help fight an infection that is already making you sick.
How does the magma in underwater volcanoes in Hawaii form?
Answers
Answer:ike a blowtorch, the heat transforms deep rocks into oozy magma
Explanation:
Answer:
Like a blowtorch, the heat transforms deep rocks into oozy magma. The magma rises upward until it erupts onto the seafloor. When the sizzling lava (which is what magma is called when it erupts) hits the cooler water, it hardens into an underwater volcano, the heat transforms deep rocks into oozy magma
Explanation:
Which level(s) in the energy
pyramid represents the
producers?
1 Producers
2 Primary consumers
3 Secondary consumer
4 Tertiary consumers
5 Quaternary consumers
Answers
Answer:
1
Explanation:
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a two-paragraph report on flower reproduction
Answers
Answer:
Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. ... Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant. The primary purpose of a flower is reproduction. Since the flowers are the reproductive organs of plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma.
Explanation:
Answer:
Alternation of generations occurs in plants, where the sporophyte phase is succeeded by the gametophyte phase. The life cycle of a flowering plant. The angiosperms were the last of the seed plant groups to evolve, appearing over 100 million years ago during the middle of the Age of Dinosaurs. Reproductive parts of the flower are the stamen and carpel. Often the carpel is referred to as the pistil, the female parts collectively termed the gynoecium. The androecium is the individual units of the androecium are the stamens, which consist of a filament that supports the anther.
Pollen Pollen grains, from the greek palynos for dust or pollen, contains the male gametophyte phase of the plant. The outer part of the pollen is the exine, which is composed of a complex polysaccharide, sporopollenin. Hypothesized steps in the evolution of the carpel. Nonvascular plants, the mosses, and liverworts have the gametophyte phase dominant. Vascular plants show a progression of increasing sporophyte dominance from the ferns and "fern allies" to angiosperms.
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