Which of the following best describes the behavior of the human X and Y chromosomes during meiosis? Select all correct choices
A. The X and Y chromosomes have no
regions of homology and therefore do not pair
during meiosis.
B. The X and Y chromosomes have regions
of homology that allow them to pair during
meiosis.
C. Although the X and Y chromosomes pair
during meiosis, crossover does not occur.
D. Crossover occurs when the X and Y
chromosomes pair during meiosis.
E. None of these correctly describes the
behavior of the human X and Y
chromosomes during meiosis.
B,D
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Which of the following is true of the integration of a viral genome into the host chromosome?
A. Integration begins the process of host chromosome degradation. B. Integration of the viral genome is a form of site-specific recombination. C. The enzymes that are used in integration are nonspecific for the virus and its host. D. All of the choices are correct.
Which statement is NOT true about yellow bush
lupine? a. It is native to northern California. b. It thrives in nitrogen-deficient soil. c. Its leaves have a dense array of epidermal hairs. d. Its leaves fold in response to wind and heat. e. Its leaves are adapted for water conservation.
Viruses with -ssRNA require the activity of (DNA polymerase/reverse transcriptase/RNA-dependent RNA polymerase) for their replication
What will be an ideal response?
Which sex should show mate choice?
a) Always males b) Always females c) The sex having higher parental investment d) The sex having lower parental investment e) Neither sex