A couple has a baby with blue eyes. The mother has brown eyes and knows she is heterozygous. The father also has brown eyes but does not know his genotype. If brown is dominant to blue, what is the father’s genotype?

B = allele for brown eyes

b = allele for blue eyes

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

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the areas around the equator