The stage of mitosis characterized by the physical separation of sister chromatids is called Metaphase.

Which of the following engages in extensive crossing-over in the making of gametes?

The concept of defining species based on their physical attributes and appearance is known as the

The merging of two haploid cells from different individuals to form a diploid cell is best characterized as

Cells that contain two copies of each gene are said to be haploid, and those that contain one copy of each gene are said to be diploid.

What is true about flowers?

Daphnia (water fleas) usually reproduce asexually by cloning. What causes individuals to switch to sexual reproduction?

Alternate forms of a particular gene are termed __________.

The best definition of biological fitness is the ability to  

In a Punnett square, which of the following is true about the column and row title headings?