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Leya [2.2K]
3 years ago
14

What is menstruation​

Biology
2 answers:
Svetradugi [14.3K]3 years ago
5 0

Answer:

Menstruation is a time in a young-women's life where she starts to bleed from her ding-dong. This happens because when an egg in her uterus is not fertilized by a sperm, the lining of the uterus breaks itself down and passes out through the uterus opening, including the egg.

Scrat [10]3 years ago
3 0
A period.which comes every month.your Uterus lining is shredds blood from the lining therefore making girls have a period every month
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lacks a well defined nucleus

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How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when
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Answer:

27 genotypes and 8 phenotypes

Explanation:

Supposing that the genotypes of both of the parents are AaBbDd (A, B and D are dominant over a, b and d).  After completing the Punnett square, you can predict the following offspring:

I add an image where you can see all the 27 genotypes and frequencies.

Finally, all the 8 phenotypes with the following frequencies:

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9/64   A-B-dd

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3/64   A-bbdd

3/64   aaB-dd

3/64   aabbD-

<u>1/64    aabbdd </u>

Total 64/64

Note: when a phenotype is A-, it means that it came from either genotype, AA or Aa. The same applies to B- (BB or Bb) and D- (DD or Dd)

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Https://quizlet.com/51034175/biology-flash-cards/
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How do limiting factors affect population size?

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