In horses, trotter (T) is dominant over pacer(t). A trotter stallion is mated to a pacer mare, and the offspring is a pacer. What is the genotype of the stallion?

A male with underdeveloped testes, breast development, subnormal intelligence, and an abnormal karyotype is likely to have ____.

In animals, the only cells that are haploid are the ____.

Which of the following statements is NOT true regarding an X-linked recessive trait?

In pea plants, green pods are dominant over yellow pods. When two heterozygote plants are crossed, what percentage of plants will have green pods?

In horses, black (B) is dominant over white (b), and trotter (T) is dominant over pacer (t). In the cross TtBb x TtBb, how many of the offspring will be black trotters?

A human male has ____ chromosomes with ____ sex chromosomes.

The study of the geographical distribution of living organisms is

Prokaryotic cells reproduce by ___.

The ability of an organism to survive and reproduce in its local environment is its