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MaRussiya [10]
2 years ago
10

Why are lethal dominant alleles so much more rare than lethal recessive alleles?

Biology
1 answer:
juin [17]2 years ago
5 0

Lethal alleles cause the death of an organism prenatal or after the birth. Lethal alleles are usually a consequence of a mutation and they can be recessive, dominant or conditional. Since the lethal dominant alleles are harmful whether they are carried in homozygous (e.g.AA) or heterozygous (e.g.Aa) form,  a strong selection against them is present and thus these alleles are much more rare.

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Answer:

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5 0
2 years ago
What is a ligand? what do ligands have to do with receptor-mediated endocytosis?
Volgvan
In biochemistry, aligand is a substance that forms a complex with a biomolecule to serve abiological purpose. In protein-ligandbinding, the ligand is usually a molecule which produces a signal by binding to a site on a target protein.

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3 years ago
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mihalych1998 [28]
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3 0
3 years ago
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Por lo tanto, la proporción de ADN no codificante aumenta con el tamaño del genoma más rápidamente en las no bacterias que en las bacterias. Esto es consistente con el hecho de que la mayor parte del ADN nuclear eucariota no codifica genes, mientras que la mayoría de genes procariotas, virales y orgánulos sí lo son.

4 0
3 years ago
Codominance occurs when a recessive gene overpowers a dominant gene. there is an exact compromise between two genes. a dominant
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The correct answer there is an exact compromise between two genes (alleles). <span>The codominance is a form of dominance when the alleles of a gene pair in a heterozygote are both fully expressed. As a result of this, offspring have a phenotype that is neither dominant nor recessive. Example of codominance is found in ABO blood types. When you have allele Ia and allele Ib the expressed blood type is AB.</span>
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3 years ago
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