What two characteristics of the males most influence their likeliness to mate

What is the largest organ in an earthworm?

2. Which organelle acts like the "brain" or control center of the cell?

Active transport is different from simple diffusion because active transport

Snapdragons, a flowering plant popular with gardeners, can have red, white, and pink colored petals. When snapdragons with red petals (RW) are crossed with snapdragons having white (WW) petals, the offspring have pink petals.

What is a control group in an experiment

two students are discussing natural selection in bacteria and how it can relate to antibiotic resistance in bacteria

According to the fossil record, how long did the transition from fully terrestrial to fully aquatic whales take?

Damage to which of the following structures would most likely result in an increase in mutations in a man's sperm cells A. Epididymis b. testes c. urethra d. scrotum

A college student comes to the campus health care center complaining of headache, malaise, and a sore throat that has worsened over the past 10 days. the nurse measures a temperature of 102.6° f (39.2° c.

Which of the following provides the best summary of the process of natural selection? A. Individuals always change in response to their environment. B. Genes are passed from parent to offspring. c. Mutations always increase an individual's fitness.