Answer:
It's occur in mitosis.
Explanation:
This occur mainly in Mitosis.
In mitosis the parent cell divides into two daughter cells and its then replicates it chromosomes number or dna in the daughter cells. Therefore each daughter cells carries the same number of chromosome as the parent , therefore they are genetically identical as the parent cells.
Therefore, they most have the same number of chromosomes so that they can be genetically identical as the parent cell
Daughter mitotic cells must have the same genetic information as parent cells to carry out normal cellular functions. Moreover, mitosis also ensures the correct segregation of homologous chromosomes in successive cell divisions.
Mitosis is a type of cell division in which one cell divides to produce two daughter cells that are genetically identical to the parental cell. This type of division occurs in all types of cells in the body, with the exception of gametic cells located in the ovary (egg) and the testicles(spermatic cells). In diploid (2n) cells that have two sets of homologous chromosomes, mitosis results in the formation of two 2n cells with identical genetic content.Thus, mitosis ensures that the number of chromosomes in each cell division is constant, thereby daughter cells will have the same number of chromosomes as the parent cell. This maintenance of the chromosome number is fundamental to grow and self-maintain the body.Chromosome imbalance due to errors during mitosis (i.e., error in segregation of homologous chromosomes) may lead to the disruption of large numbers of dosage-sensitive, developmentally essential genes and therefore result in disease/lethal phenotypes.Conversely, meiosis is a reductional type of cell division that reduces the number of chromosomes in the parent cell by half in order to four gamete haploid (n) cells. During fertilization, male and female n gametes fuse to produce a diploid cell (i.e., the zygote) that develops into an adult, thereby perpetuating the correct number of pairs of chromosomes in the cells of any given species.
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This biome has a cold harsh climate and short growing season.
A)Temperate Forest
B)Taiga
C)grasslands
Grassland biome has a cold harsh climate and short growing season.
What is Grassland?
Grasslands can be found in regions with regular rainfall levels that are insufficient for a forest to thrive but not so low that a desert develops. Indeed, meadows are frequently found between deserts and woods. Grasslands cover anywhere from 20 to 40% of the planet's geographical area, depending on how they are characterized.
They exist on every continent, with the exception of Antarctica, and are often open and flat, making them susceptible to pressure from burgeoning human populations.
Agriculture, excessive grazing, invasive species, unreported hunting, and climate change are some of the threats to natural grasslands and the wildlife that inhabits them.
Therefore, Grassland biome has a cold harsh climate and short growing season.
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According to the Periodic Table,the elements are arranged in order of increasing
4. Use your knowledge about the relationship between nutrients and photosynthesis to explain the trends you observed in the data.
Answer:
The trends go up in the presence of nutrients.
Explanation:
There is a great relationship between nutrients and photosynthesis because photosynthesis can't occur without without the availability of nutrients. Plants uses carbon from the atmosphere which is a nutrient whereas other nutrients such as nitrogen, phosphorus, potassium etc from the soil with the help of the roots. If these nutrients are available in the surrounding, the plant produced more food during photosynthesis because these nutrients are the food of plants so the trends go up in the presence of nutrients and lowers down in the absence or lower concentration of nutrients.
Maria and Sam are doing an investigation to see what happens if a vegetable is placed in salt water overnight. The next day, they notice that their sample appeared shrunken because salt water causes cells to lose water. Sam tells Maria that he thinks this is the reason why humans cannot drink salt water. Is he correct? A. Yes, Sam is correct. Animal and plant cells react the same way when exposed to salt water, so it is not safe to drink. B. Yes, Sam is correct. Animal cells can process salt water in small amounts, so it is safe for humans to drink salt water. C. No, Sam is not correct. Plant cells and animal cells act differently when exposed to salt water. D. No, Sam is not correct. Both animal and plant cells are made in the same way, but plant cells can process salt water.
Answer:
C
Explanation:
because it makes sense
Answer:
A. Yes, Sam is correct. Animal and plant cells react the same way when exposed to salt water, so it is not safe to drink.
Hope This Helps!!!!
How many chromosomes are there in
gametes?
HALF the amount of normal cells
The same amount as all other cells
DOUBLE the amount of normal cells
Answer:
HALF (23) the number of normal cells (46).
Explanation:
A population of birds contains 16 animals with red tail feathers and 34 animals with blue tail feathers. Blue tail feathers are the dominant trait.
Answer:
Yes they are becuase of mixed breeding pls sub to Beast_Building on yt since i helped :) !!!
Explanation:
(giving brainiest)
brainly will ban you if you answer with a wrong absurd answer or copied answer if the question has over 50 points in it!
Answer:
Inner planets: Mercury, Venus, Earth, Mars
Outer planets: Jupiter, Saturn, Uranus, Neptune
They all orbit the sun, have a core, are round, and have gravity.
Jupiter vs. Venus: They both have reflective atmospheres. Jupiter is much larger and is a gas planet. Venus is smaller and has a rocky surface.
Explanation:
Hope this helps!
What is the connection between the Igneous rock In the picture of the volcano and the black sand beach? What are some steps n the process?
Answer:
There isn't a picture, but the black sand beach was created because of volcanoes. These beaches for over a long amount of time by erosion of volcanic minerals and lava. This is combined with the ebb and ocean waves.
Changes in Cytochrome b
G. G galloti G. galioti G galloti
atlantica palmae eisentrauti
G
stehlini
G.
bravoana
G.
simonyi
galioti
G
stehlini
36
atlantica
G. Galloti
palmae
41
25
G. galloti
hisentrauti
40
8
23 19
G. galloti
40
10
6
galloti
45
24
19
19
15
bravoana
49
28
19
G
simonyi
21
17
Which conclusion about the relatedness of the lizards do these data support?
A G. atlantica and G. Stehlini are the least closely related.
B G. simonyi and G. bravoana are the most closely related.
C G galloti eisentrauti and G. Galloti palmae are the most closely related.
D G galloti eisentrauti and G. galloti galloti are the least closely related.
Answer:
your answer is d
Explanation:
because if you dip an object into water it becomes acid fluids like gas
Who determined that gravity was the cause of the motion of planets that Kepler described?
a. Galileo
b. Copernicus
C. Newton
d. Aristotle
Answer:
A-Galileo
Explanation:
I just recently learned this in class. I can’t tell you exactly everything. But I think he wrote a book that put the church and a position they didn’t want to be in. He basically said “Hey you‘re wrong about the theory you told millions of peopl and they believed it “ He wrote a whole book expalingin why and with scientific observations.
True/False: Cellular respiration just happens to plants because they use photosynthesis.
____cells cannot be replaced when they are damaged.
options:
red blood
nerve
Answer:
Nerve cells
Explanation:
Nerve cells do not renew themself. Sure, they can be repaired.
How can new species arise through isolation?
Answer:
sorta
Explanation:
wit da right ppl it can breed new annimels
name the separation method of Akpeteshie
Answer:
Distillation
Explanation:
Answer:
Distillation is the separation method used for Akpeteshie.
Correctly identify and label the structures associated with the branches of the spinal nerve in relation to the spinal cord.
Answer:
Sorry for the Assholw above me but I think this can help
Explanation:
The spinal nerves consist of 31 symmetrical pairs of nerves that connect the spinal cord to the periphery. There are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerves. The anatomical relationship between the spinal cord, spinal nerves, and autonomic sympathetic ganglia.
What is meant by spinal nerves?A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column.The spinal nerves consist of 31 symmetrical pairs of nerves that connect the spinal cord to the periphery. There are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerves. The anatomical relationship between the spinal cord, spinal nerves, and autonomic sympathetic ganglia.
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Humans and animals have critical periods. True or False?
Answer:
true
Explanation:
The development period of the animals and human beings starts after the birth when a person starts learning and development.
Answer:
False it the correct answer of Oddeyseyware
Explanation:
I’ll mark u as brainliest!
Answer:
larger and glucose
Explanation:
The muscle in Lanes arm would best be described as which of the following?An An organ systemsystemAn An organorganAn An organismorganismA A tissue tissue
Answer:
A tissue
Explanation:
It's not a organism, it's not an organ system because it's not, and it's not an organ so it must be a tissue
PLEASE HELP FAST
Which of the following are carbohydrates?
Select all that apply.
fats
glycogen
starches
sugars
Answer:
fats, starches, sugars
Carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
What are Carbohydrates?Carbohydrates is defied as that contains biomolecule that contains carbon hydrogen and oxygen in a ratio of 2:1.
Carbohydrates are mane source of energy of the body they work as fuel for the brain, kidneys central nervous system and heart muscle.
Cn(H2O)n is the basic formula for all carbohydrates . But this formula have limitation i.e it applies where same amount of carbon and water are use.
Initially the terms carbohydrate was used to describe compounds that have really contains carbohydrates because they had simple formula CH20.
In modern era carbohydrates are classified on the basis of their structure not on their formulae. Such as aldehydes and ketones are now known as polyhydroxy.
Therefore,carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
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What
The differee between Riversible Inhibition and
irrversibel Inhibition
Answer:
Explanation:
Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation)
In contrast, reversible inhibitors bind non-covalently and different types of inhibition are produced depending on whether these inhibitors bind to the enzyme, the enzyme-substrate complex, or both.
A research scientist studied the effects of various treatments on the growth of poplar trees. He decided to treat a large sample of saplings with a fertilizer, continual irrigation, irrigation and fertilizer and a control group (non-continual irrigation and no fertilization). He placed one quarter of all saplings into each of the groups and then measured their mass differential after 3 weeks. Did the treatment have an effect on the growth of the trees
Answer:
hello your question is incomplete attached below is the screenshot of the missing part
answer : The treatment had an effect on the growth of the trees
Explanation:
H0 : No significant effect
Ha : At least one treatment has a significant effect
To confirm the above hypothesis ( conduct one way ANOVA )
From the one way Anova
( X represents each group; from control to Fertilizer and irrigation )
∑ X1^2 = 0.2338 , ∑ X2^2 = 1.8284, ∑X3^2 = 0.1982, ∑X4^2 = 11.8492
Also : ∑ N = 5 + 5 + 5 + 5 = 20 where N = number of trees in each group
also K represents number of groups i.e. = 4
Next calculate the sum of squares ( calculated using online tools )
i) Between sum of squares: value = 4.6824
ii) Within sum of squares : value = 4.3572
Next step : Calculate the degrees ( DF)
i) Between degrees of freedom
Dfb = k - 1 where K = 4 therefore Dfb = 3
ii) within degrees of freedom
Dfw = N - k , where N = 20 and K = 4 therefore Dfw = 16
Next : calculate mean sum of squares
i) Between mean sum of squares
= 4.6824 / 3 = 1.5608
ii) within mean sum of squares
= 4.3572 / 16 = 0.2723
Calculate the F-statistic value
[tex]F_{calculated }[/tex] = Between mean sum of squares / within mean sum of squares
= 1.5608 / 0.2723 = 5.73
determine the F critical value
Fcritical = [tex]F_{3,16,0.05}[/tex] = 3.2389 ( obtained from F table )
since [tex]F_{calculated } > F_{critical}[/tex] hence we can say The treatment had an effect on the growth of the trees i.e. Reject H0
What is a nucleosome
Answer:
A nucleosome is the basic structural unit of DNA packaging in eukaryotes.
What causes the difference in humidity between Florida and Las Vegas
Answer:
yep
Explanation:
Little or no humidity is not so true anymore, with the building up and more greenery. Las Vegas the humidly is not at all that low as it once once
The difference in humidity between Florida and Las Vegas is primarily due to their geographic locations and climate patterns.
What causes the difference in humidity between Florida and Las Vegas?Florida is located in the southeastern United States and is surrounded by water on three sides, with the Atlantic Ocean to the east, the Gulf of Mexico to the west, and the Straits of Florida to the south.
This proximity to water and the warm ocean currents that flow nearby create a humid subtropical climate, characterized by hot summers and mild winters with high levels of humidity throughout the year.
The low humidity in Las Vegas is due to the fact that the dry air has little moisture in it, leading to a lower amount of moisture in the atmosphere. Thus, there is a difference in humidity between Florida and Las Vegas.
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In pea plants, round peas are dominant over wrinkled peas. In a cross between a
heterozygous round pea plant and a wrinkled pea plant, what is the phenotypic ratio of
their potential offspring? Use a Punnett square to justify your answer
Answer:
2:2
Explanation:
2 offspring will be Rr, which is round
2 offspring will be rr, which is wrinked
Therefore, the ratio will be 2:2
When you feel nervous, does that have anything to do with actual nerves? Explain.
Answer:
No to feel nervous is too feel the sense of feeling scared and has nothing to do with the nerves in your body
For a population to be in Hardy-Weinberg equilibrium, the population must
be small.
not experience migration.
have new mutations.
have nonrandom mating.
Answer:
The population must be at carrying capacity
Explanation:
Hardy-Weinberg equilibrium has a set of conditions that must be met in order for the population to have unchanging gene pool frequencies. There must be random mating, no mutation, no migration, no natural selection, and a large sample size.
It is not necessary for the population to be at carrying capacity. The population can grow or shrink while maintaining the gene pool.
For a population to be in Hardy-Weinberg equilibrium, the population must not experience migration. Thus, the correct option is B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg principle is also known as the Hardy-Weinberg equilibrium, or law, which states that the allele and also the genotype frequencies in a population will remain constant from one generation to next generation in the absence of other evolutionary influences, as well.
There are five basic Hardy-Weinberg assumptions no mutation, random mating, no gene flow, infinite population size, and no selection.
For a population to be in Hardy-Weinberg equilibrium, the population must not experience migration.
Therefore, the correct option is B.
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Help me out pls and thanks omgggg
Answer:
answer is A good luck on you're quiz
Bruce had a stroke, after which he could not move his left arm. However, after
physical therapy, he regained some control of that arm due to some brain neurons
growing new connections among themselves. This is an example of
Answer:
Brain Plasticity
Explanation:
This is an example of the brain's ability to adapt to changes in the body and loss of connections in the brain itself and is not fully understood. This is also why people that loss their vision can have much better hearing months or years later, as their brain adapts to the body's loss of a sense and compensates.
The example given explains neuroplasticity.
Neuroplasticity, is also referred to as brain plasticity and this occurs when there's a change in the nervous system as a result of a response to a particular stimuli.
In this case, the neural networks that are in the brain will change and the changes can bring about systematic adjustments in the body.
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Endangered species are species with decreasing populations that are
sudden loss of habitat
decreased number of natural predators
increased availability of reproductive mates
moving an individual organism into captivity
Answer: Sudden loss of habitat
Explanation:
Endangered species are animal or plant species that are in danger of going extinct.
This usually results from them suddenly losing their habitat and thus being exposed to unfamiliar conditions or threats that could end their existence. For instance, elephants losing their forest habitats in India and thus encroaching on farmland only to get shot for damaging farms.
Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell: Select all that apply. accumulate near the centromeres. are deleted from the genome. become more densely packed with nucleosomes. accumulate point mutations. undergo irreversible repression.
Answer:
The correct answer is ''undergo irreversible repression.''
Explanation:
The morphological and physiological transformation of meristematic cells into adult or differentiated tissues constitutes the process of cell differentiation. This, and the consequent specialization of the cell, bring about the division of labor, forming cells with specific functions. Differentiation occurs by differential activation of some genes and repression of others. Depending on the position it occupies, each cell receives certain stimuli to develop the corresponding activities. During the differentiation process, cells undergo a series of changes in their characteristics and there is a readjustment in their mutual relationships.Different molecular factors initiate and drive the programming / reprogramming of cell fate through the modulation of specific genomic and epigenomic patterns, which regulate the expression of activator / repressor genes of the main fundamental and specialized cellular processes. Thus, the differentiated cell will express certain genes and acquire certain functions.Adult stem cells are responsible for maintaining the different types of specialized cells that make up the body. Asymmetric cell division in stem cells has emerged as one of the main physiological mechanisms that regulate the number of cells and their diversity to maintain tissue homeostasis. A large number of molecules, generically called determinants of cell fate, participate in the regulation of asymmetric division. Asymmetric division of somatic stem cells produces both a stem cell and a progenitor. The initial progenitor cells, through new cycles of asymmetric cell division, finally reach their terminal state of cell differentiation, due to changes in intracellular and extracellular (environmental) signaling. After cells leave their mother state and begin to differentiate, they make exclusive selections for phenotypic pathways through secondary genomic / epigenomic modifications, mainly to different types and gradients of transcription factors (physiological programming of cell differentiation). This leads, for example, to activation of specialized biosynthetic pathways, remodeling of the cytoskeleton, and repression of cell proliferation signaling. The expression of genes is regulated mainly at the level of their transcription. Transcription factors correspond to proteins with the ability to interact with specific DNA sequences and trigger their transcriptional activity. Most transcriptional factors contain different domains that participate in different aspects of protein function; they generally contain two domains: a domain that binds to specific DNA sequences and an activation domain that regulates transcription by interacting with other proteins. In the regulation of gene transcription, in addition to transcription factors, coactivating and corepressor molecules participate, which bind to them, modifying their activity in a positive or negative sense. Each cell type has a characteristic pattern of gene transcription, which is determined by the binding of combinations of transcription factors to the regulatory regions of a gene.
Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell are undergoing irreversible repression.
What does the term gene repression mean?
Gene repression is the switching off of unique genes whose products are needed to support the function of the cell such as the production of vital enzymes or cofactors.
This is specifically important if the products of such genes are not long-lived and deteriorate, or are metabolized.
Thus, option "D" is undergo irreversible repression.
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