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shepuryov [24]
2 years ago
10

What must be true for natural selection to happen?

Biology
1 answer:
Juliette [100K]2 years ago
6 0

Answer:

pretty sure it’s B

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In a study where participants rated the pleasantness of t-shirt odors, what gene alleles influenced their odor preference
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Major histocompatibility complex are the gene alleles that influenced their odor preference.  

Major histocompatibility complex (MHC), are group of genes found in mammals. Major histocompatibility complex codes for proteins that are present on cells surfaces and assist the acquired immune system to recognize foreign molecules. The primary role of MHC molecules is to attach to antigens obtained from pathogens and show them on the cell surface for recognition by the suitable T-cells.


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3 years ago
What percentage of offspring from a cross between a homozygous type A parent with a heterozygous Type A parent is expected to co
snow_lady [41]

The correct answer is option B, 50%

Let us take the following case:

Genotype of heterozygous parent - (Aa)

Genotype of homozygous parent – (aa)

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Aa  X aa

Aa, Aa, aa, aa

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8 0
3 years ago
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lapo4ka [179]
Number 1 is fraternal (also known as dizygotic) 
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