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Phoenix [80]
3 years ago
14

The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on a saf

e pregnancy?
A graph shows the changing levels of hormones during menstruation and ovulation. Progesterone increases after ovulation.
Luteinizing hormone promotes fertility because it spikes the most during ovulation.
Estradiol promotes fertility because it peaks slightly before ovulation.
Progesterone promotes fertility because its levels rise during ovulation and immediately after.
Follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.
Biology
2 answers:
lara31 [8.8K]3 years ago
6 0

Answer:

Ans. (C).Progesterone promotes fertility because its levels rise during ovulation and immediately after.

Progesterone is a female sex-hormone, produced in the ovaries right after ovulation and its level rise immediately after ovulation (as shown in graph). A thick, and proper uterine lining is important for the implantation of zygote in the uterine wall.

Progesterone has the most influence on a secure pregnancy as it promotes the thickening and maintenance of uterine lining. Low levels of progesterone makes it difficult to get pregnant as zygote cannot implant properly.

Darina [25.2K]3 years ago
3 0

Answer:

C

Explanation:

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A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls loo
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Answer:

5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)

6.) Frequency of R: 0.5

7.)Frequency of R: 0.5

8.)Frequency of R: 0.375

Explanation:

5.) If R and B code for the different forms of the same protein then they are only a few possible out comes

6.) First calculate the total alleles in population

allele R= 40

Allele B=40

total allele = R+B= 40+40

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Now to find allele R frequency is:

(Total R alleles) / (Total allele in pop)

40/80=

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7.)Calculate the total alleles

Alleles from for R

RR= 10

R=10x 2= 20

Multiply the value by 2 because there are 2 R alleles present in

RB=20

R=20

Number doesn't change there is only 1 R allele

Total R=20+20

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Alleles For B

BB=10

B=10×2

=20

Same thing here, two B alleles together so multiple by 2

RB=20

B=20

Total B= 20+20

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Total alleles in pop add

40+40

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Frequency of R

Total of R/Total Alleles

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8.)Repeat the same thing in 7 but use different numbers

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