Erasmus Darwin based his conclusions regarding common descent on ___.

Analogous structures ____________________________.

In a hierarchical system of classification organisms are grouped into series of descending groups starting with the smallest group (most exclusive) and ending with the largest one (most inclusive).

Name each part of the Cell Cycle.

The diploid (2N) number of chromosomes for humans is ___.

The explanation of the history of life known as ‘catastrophism’ was used to explain…

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 ___.

Match the following to the best answer:

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?