Match the definitions with their vocabulary terms. Not all terms will be used. a. process in which organisms with extreme expressions of a trait are removed. b. process in which shift of a population toward an extreme version of a beneficial trait. c. process in which individuals with average traits are removed, creating two populations with extreme traits

The answers are Stabilizing selection, directional selection and disruptive selection respectively.

In case of a population of a species, there exists both the homozygous alleles as well as the hybrid of the two characters. This leads to co existence of both hybrids and homozygotes together in a population.

Now because of the natural selection, there remains some characteristics in either homozygotes or in hybrids which gets special advantages over other. So nature selects the preferred race and the number of those individuals in the population increase.

If number of one of the homozygotes increase, then it's the directional selection.

If the number of the hybrids increase, then its Stabilizing selection.

And if both the homozygotes are selected, then it's divergent selection.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.