An individual whose two alleles for a given gene are identical is said to be

Female birds lay shelled eggs. Penguins are birds. Therefore penguins lay shelled eggs. What kind of reasoning is this?

Which of these sequences of nitrogenous base pairs could be found in a double-helix DNA molecule?

Charles Darwin’s five-year adventure during his twenties

Birth rates can be expressed in different ways. Nation A reports its birth rate as averaging 2.4 offspring per female. Nation B reports its birth rate as averaging 1.3 offspring per person, with no reference to sex. Which nation has a higher birth rate?

Bacteria reproduce using what method?

What genetic material has a continuous, unbroken heredity in the male (patrilineal) line?

In the creation of new cells from old, the step where a cell actually splits in two is known as

Darwin finally published the Origin of Species in this year _________.

A comparative review across the animal world reveals that homosexual behavior is common. However, long-term or exclusive homosexual preference is infrequent except in