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Rufina [12.5K]
2 years ago
7

Why do birth control pills contain progesterone? Help please!!

Biology
2 answers:
goldenfox [79]2 years ago
8 0
D is the answer mmmmm
Artist 52 [7]2 years ago
6 0

Answer:c  u take birth control to not get pregant so if  thers no sperm and eggs mixed no prego

Explanation:

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Ancient human migrations can be better understood by analyzing genetic characteristics of modern populations; elements transmitt
topjm [15]

Answer:

mitochondria DNA (mtDNA) has maternal inheritance

chloroplast DNA (cpDNA) has paternal inheritance

Explanation:

DNA is deoxyribonucleic acid is the molecule responsible for encoding the genetics instructions used in the development and functioning of all known leaving organism.

in humans mitochondria DNA (mtDNA) has maternal inheritance and

chloroplast DNA (cpDNA) has paternal inheritance

5 0
3 years ago
What makes female bees unique?
MrRissso [65]

Answer:

the correct answer is b

4 0
3 years ago
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Katy works at a pet store, and is in charge of tracking the cat food supply for the morning, afternoon, and evening shifts. Ther
iragen [17]
I think its C. the cats tend to eat more in the evening
4 0
3 years ago
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Which condition would result in the least evolution as a result of gene flow? a. Very different allele frequencies in different
nikitadnepr [17]

Answer:

c. Unusually high migration variance Individuals that are very successful at migrating to new populations, but cannot mate in the new locations.

Explanation:

Gene flow refers to the movement of alleles between the local populations when individuals form a population migrate into the other population. Gene flow can occur only if the migrated individuals mate successfully with the individuals of the other population. This would add new alleles from immigrant individuals to the gene pool of the population leading to evolution.

If the immigration is not followed by the mating of the immigrants with individuals of the local population, there would not be any addition of new alleles to the gene pool and the population would not exhibit evolution by gene flow.  

3 0
3 years ago
we can block light by placing obstacles in its path, but it’s much more difficult to block sound. why?
krek1111 [17]
It's harder to block sound because sound waves and transverse waves, causing the sound to bounce off objects. This isn't the same with light.
8 0
2 years ago
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