Complement factors are named in the order in which they function.

Activated helper T-lymphocytes release

When Mendel crossed purple-flowered pea plants with white-flowered pea plants, he never got offspring with flowers that had an intermediate color. This was counter to the theory of

The shape of the beaks of Darwin’s finches and industrial melanism are often cited as examples of the process of_________ leading to evolutionary change.

A type of isolating mechanism that leads to reproductive isolation after a hybrid zygote has formed is called a_________ isolating mechanism.

If two species are competing for the same resource, then either one species is likely to go extinct through competitive exclusion, or natural selection will drive the evolution of

The evidence for industrial melanism being caused by an increase in the dark allele was provided from field tests carried out by

In Morgan’s experiments, the white eye allele in Drosophila was shown to be

In some human populations, the proportion of individuals who are heterozygous for the sickle cell allele is much higher than would be expected by chance alone. Why?

Punctuated equilibrium proposed by Eldredge and Gould in 1972 is an evolutionary process that involves