If one parent has the alleles of gene a, : AA and the other parent has the alleles of gene a: Aa, what are the possible combinations the child could receive?

Consider an alien species that has two major physical traits that follow the principles of Mendelian genetics: horn arrangement and horn color. For this species, forehead horns can either be arranged in a trio of small horns or as a single large horn. Horn color can be either black or white.

The trio arrangement is a dominant trait, and alleles for horn arrangement use the letter "T." The white coloration is also a dominant trait, and alleles for horn color use the letter "W."

Which of the following would produce the highest proportion of offspring having three black horns when crossed with an alien heterozygous for both traits?

Which option describes the phenomenon where a rare or naturally occurring disaster wipes out a certain generation of the population so that the resulting population hardly resembles the original parent generations?

In a dihybrid cross (AaBb x AaBb), how many total genotypes are possible in the offspring?

Which definition below defines allelic variation?

In the context of the Hardy-Weinberg law, which of the following is true regarding random mating?

I. It refers to individuals mating without choosing mates based on their traits.

II. It contributes to a Hardy-Weinberg equilibrium since it provides all alleles an equal chance of being passed on to progeny.

III. It is characteristic of and consistent with natural selection.

Consider an alien species that shows simple dominant-recessive inheritance of ear shape, in which rounded ears are dominant and pointed ears are recessive. These species meets the requirements for a Hardy-Weinberg equilibrium, and of all the alleles for ear shape present in the population, 75% are dominant and 25% are recessive.

If there are 4000 individuals in the population, how many would you expect to have rounded ears?

If you cross a red long pedal poppy with genotype RrLl and a white short pedal poppy with genotype rrll, what should my F1 progeny look like?

Human birth size is an example of __________.

A few monkeys were moved from a zoo in New York to a theme park in Ohio. Over generations, the population of monkeys in Ohio becomes significantly different than the one in the zoo in New York. Which of the following terms best describes this scenario?