In humans, a type of blindness is due to a dominant allele; normal vision is the result of a recessive allele. migraine headaches are due to a dominant allele, and normal (no headaches) is recessive. a male who is heterozygous for blindness and does not suffer from headaches marries a woman who has normal vision and does not suffer from migraines. could they produce a child with normal vision who does not suffer from headaches? if yes, can the probability of such a child be determined?

Yes.

Probability of such child = 1/2 or 50%

Explanation:

According to the question, below are the genotypes and phenotypes possibilities:

aa = normal vision & no headache

Aa = normal vision & no headache

AA = blindness & headache

                                                                      Male                       Female

                                                                        Aa                            aa

Possible genotypes of progeny:            Aa        Aa           aa         aa

So it is clear that out of the 4 probable children, 2 with 'genotype aa' will have normal vision & no headache.

Mathematical expression is as under:

2/4 = 1/2 that means 50% progeny.

the correct answer is:

a population changes in response to a change in the environment.

earthquakes in florida are rare because the state is not located near any tectonic plates. in fact, florida is tied for first place as having the fewest earthquakes of any state. much of florida is limestone and seafloor materials that is not conducive to earthquakes.

explanation: