The blood group of sam’s father is a+ and that of his mother is b+. however, sam’s blood group is ab+. what is the correct explanation for this?

Explanation:

AB blood group system in humans is determined gene I. This gene has two alleles IA IB. In heterozygous condition, both these alleles both the alleles express completely resulting in a new phenotype. This is called co-dominance and because in this both the alleles are expressed. Thus, in the given question, Sam is with blood group AB⁺ is due to co-dominance because both the alleles A⁺ and B⁺ are codominant with each other.

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation:

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms