A chromosomal alteration in which one or more pairs of homologous chromosomes fail to separate normally during meiotic cell division is known as

What are the two substances that may be formed in anaerobic respiration?

Which of the following is NOT a biological environment factor? symbiosis competition predation none of the above

Why is photosynthesis considered a bridge between the nonliving and living worlds?

2. In which phase of meiosis will sister chromatids separate and move to opposite ends of the cell? A. Anaphase I B. Anaphase II C. Prophase II D. Telophase I

Describe a similarity and a difference between meiosis I and meiosis II

Which population is limited by density-dependent factors? (a) A deer population is reduced as a result of a forest fire. (b) A population of rams is decimated by an earthquake. (c) A local wolf population experiences a lethal epidemic of parvovirus.

Which statement correctly explains how recombination increases genetic variation

In an island ecosystem, a species of beetle feeds on the leaves of a shrubby plant. A species of songbird preys on the beetle species. A hawk species hunts the songbirds for food.

which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Which of the following is a growing threat to animals