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vodka [1.7K]
4 years ago
15

What main process in meiosis ensures genetic variation in the offspring

Biology
2 answers:
Mnenie [13.5K]4 years ago
4 0

Genetic variation is increased by meiosis. During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote

Doss [256]4 years ago
3 0

Crossing Over. During prophase of meiosis I, the double-chromatid homologous pairs of chromosomes cross over with each other and often exchange chromosome segments. This recombination creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.

You might be interested in
Which term describes the example below?A child with no freckles has a mother who has freckles and is heterozygous and a father w
Natali5045456 [20]
It is C as to have freckles you have to have a dominant and recessive gene (can be worked out using a punnett square) as the child has 50% of not having freckles like his dad or 50% having freckles like his mom. 
                     male genes(homozygous recessive)
                     f            f

female    F    Ff           Ff
genes
              f     ff             ff

so ff is not having freckles and being homozygous recessive, or Ff having freckles and being heterozygous.

So the child is heterozygous  so C
3 0
3 years ago
You are choosing your favorite fresh vegetables at the grocery store when you are suddenly sprayed with a mist of water meant fo
loris [4]

Answer:

c) pure water on the produce would put it in a hypotonic environment and keep the produce firm.

Explanation:

Ideally, in a natural environment, plants leafs remain fresh and firm looking by absorbing water from their natural environment. However, in a case where these vegetables have been removed from their natural environment, they have lost the ability to absorb water under natural conditions.

In order to keep the leaf cells of the vegetables firm and rigid, so they can look fresh and appealing, they have to be placed in a hypotonic condition i.e. an external condition with high concentration of water. To do this, a grocer in a supermarket will occasionally spray the vegetables with pure water to keep the vegetables' cell from drying out and hence lead to wilting, which would make the vegetables less appealing to customers.

5 0
3 years ago
What are stem cells?
Effectus [21]

Answer:

Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells

Explanation:

Totipotent (or Omnipotent) Stem Cells.

Pluripotent Stem Cells.

Multipotent Stem Cells.

Oligopotent Stem Cells.

Unipotent Stem Cells.

5 0
3 years ago
Organism A has blunt teeth, while organism B has sharp ones. Identify the organisms on basis of their feed habit and give anothe
VikaD [51]

Answer:

- Organism A is most likely a herbivore

- Organism B is most likey a carnivore

Explanation:

Based on feeding habit, organisms, usually animals, can be classified into three categories namely: herbivores, carnivores and omnivores.

- Herbivores are those organisms that feed on vegetative matter i.e. plants while carnivores are those organisms that feed on flesh of other animals or organisms. Based on what they feed on, herbivores are adapted to possess blunt teeth (for chewing) like Organism A in this question while carnivores are adapted to possess sharp teeth (for tearing flesh) like Organism B.

Based on the above explanation, organism A is most likely a HERBIVORE while organisms B is most likely a CARNIVORE.

- Another notable point of difference between herbivores and carnivores, which is likely to differentiate organism A and B as well, is that herbivores possess digestive enzyme- amylase in their saliva while carnivores do not. Herbivores need AMYLASE to break down complex carbohydrate (starch) in the plants they feed on.

7 0
3 years ago
In a praticular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull
steposvetlana [31]
You are correct :) Red coat's genotype would be tt and the black bull's genotype would be Tt. You put those in a punnett square, and you'd get 2 tt's and 2 Tt's. Hope this helps! :D
6 0
3 years ago
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