In meiosis, crossing-over refers to:
A. one type of chromosomal mutation
B. a process whereby alleles from homologous chromosomes are exchanged
C. a process that occurs only on the X chromosome
D. a type of gene mutation
B. a process whereby alleles from homologous chromosomes are exchanged
You might also like to view...
The term cosmology refers to
A. mapping large areas. B. the interpretation of air photographs. C. ancient writing systems. D. origins myths.
Which of the following hominin characteristics came first?
A) expansion of the brain B) modification of the female pelvis C) bipedalism D) reduction of the face
Polyandry is adapted to a number of different economic and demographic circumstances. Among the Toda of South India, it is an adaptation to the:
a. Shortage of land. b. Need for men to be away as soldiers for long periods of time. c. Shortage of females, created by female infanticide. d. Low birth rate of females as compared with males. e. High degree of occupational specialization.
Answer the following statement(s) true (T) or false (F)
1.Both individuals and populations can evolve. 2. Biological evolution can be defined as a change in the frequency of alleles in the gene pool. 3. Real-world populations are usually found to be in a state of genetic equilibrium. 4. If a population is in genetic equilibrium, then p2 + 2pq + q2 = 1. 5. The process of genetic drift is most significant in a population that is small.