Which of the following is not a characteristic of a tetrad?

A. It exists only during meiosis I.

B. It contains two pairs of identical chromatids.

C. It contains a pair of homologous chromosomes.

D. It has only the haploid number of chromosomes.

Applying what you learned from the "Chemical Eric" case study to this exercise, it is possible that injections of human chorionic gonadotropin (hcg) might sustain Frank's sperm production.

Unit Rates 1) 32oz to $3.29 2) 24 oz to $2.59 (math not biology)

What does the word subset mean?

Glucose is classified as a a. polymer. b. monomer. c. disaccharide. d. polysaccharide.

If the geology of the earth changes over millions of years, then life must change with it. describe how darwin made the connection between the theory of gradualism and geology and the appearance of new species using the finches he collected on the

Natural selection is often called survival of the fittest. However, often times breeding or artificial selection will create offspring create population different from the population of their ancestors.

Explain how micro evolution and migration can effect an ecosystem

What do all viruses have in common?

Sheath of schwann cell containing cytoplasm is called

Job pressure is a leading stressor for american adults. a. True b. False