Awoman gives birth to a son who has type o blood. she has type b blood. which of the following can be concluded from this about her parents' blood types? a.) one of her parents had at least one o allele. b.) one of her parents had two b alleles. c.) one of her parents had type b blood and the other type o blood. d.) one of her parents had type o blood.

The correct answer would be option A.

Explanation:

The allele for the O group is recessive to the allele of B blood group, so the genotype of the mother should be heterozygous with one allele of O and one allele of B blood group because the son has O blood group.

This condition is only possible if one parent of the mother had at least one allele of the O blood group to carry its next generation.

Thus, the correct answer would be option A.

the answer would be d

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.