Which of the following would generate new genes for a species?
A. inbreeding among a small number of individuals
B. crossing over during meiosis
C. independent assortment during anaphase I of meiosis
D. mutations in the gametes
D. mutations in the gametes
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If you see a red flower with very little odor, it is likely pollinated by ____
a. flies b. birds c. bats or moths d. butterflies e. bees
Which of the following choices is not a function of astrocytes?
a. engulf dead or dying cells b. assist in immune defense c. stimulate formation of the blood-brain barrier d. take up neurotransmitters
The luteinizing hormone (LH) ____
a. affects sex steroid hormone secretion b. has no function in males c. is produced by the corpus luteum d. stimulates milk production e. encourages growth of bone and soft tissues
Gene flow
a. has a homogenizing influence on a population. b. speeds up the divergence of two populations. c. increases the genetic variation between populations. d. is promoted by isolating mechanisms. e. promotes inbreeding.