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jarptica [38.1K]
3 years ago
10

Mutations of the brac1 gene in egg cells lead to breast cancer

Biology
1 answer:
jeka943 years ago
7 0

Answer:

a

Explanation:

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How meiosis turn one cell into four new sex cells?<br>​
scoundrel [369]

Answer:

A single round of DNA replication occurs in the parent cell, followed by two distinct nuclear division cycles. The process produces four haploid daughter cells, each with half as many chromosomes as the diploid parent cell.

Explanation:

During sexual reproduction, meiosis produces the sex cells that combine to make new children.

Meiosis is a type of cell division that results in the formation of sex cells (egg and sperm). And that is brought together to generate new progeny through the act of sexual reproduction.

Meiosis generally results in 4 haploid daughter cells, meaning half no chromosomes are contained in diploid cells.

3 0
3 years ago
As water evaporates and is absorbed by plants, the water content gradually declines until plants can no longer extract the remai
r-ruslan [8.4K]

Answer:

Wilting point

Explanation:

Wilting point is defined as the minimum amount of water in the soil that the plant requires not to wilt. If the soil water content decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated atmosphere for 12 hours.

5 0
3 years ago
Which of the following is a value of biodiversity? A. Climate change B. Pollution C. Healthy ecosystems D. Invasive species
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C) Healthy ecosystems is a value of biodiversity, whereas climate change, pollution, and invasive species are not.
6 0
3 years ago
[ANSWER INCLUDING]
Rus_ich [418]

The mother's genotype can be either X^AX^A or X^AX^a.

For X-linked recessive traits, males (XY) can either be affected or free from the disorder, they cannot be carriers. Females (XX), on the other hand, can be affected, unaffected, or be carriers.

The circled male child is free from the disorder (X^AY) while the females are carriers (X^AX^a).

The male inherited the healthy allele, X^A, from the mother.

The female children inherit the affected allele from their father (who is affected for the disorder) and the other healthy allele from their mother.

This means that the mother cannot be affected for the disease. As it is, the pedigree points that all the children got their healthy alleles from their mother. This does not mean the mother has two healthy alleles though.

Thus, the possible genotype of the mother are X^AX^A and X^AX^a.

More on pedigrees can be found here: brainly.com/question/2952835?referrer=searchResults

5 0
3 years ago
A mass of cells that have lost all restraint in division and are piled on top of one another is called a _____
Digiron [165]

Answer:

A mass of cells that have lost all restraint in division and are piled on top of one another is called a <u>Tumor.</u>

3 0
2 years ago
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