The Y chromosome is in the
A. egg.
B. egg or sperm.
C. polar body.
D. sperm.
D. sperm.
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The heritability of a trait is the ____
a. sum of all phenotypic variation in a population b. average amount of genetic variation in each individual c. proportion of phenotypic variation that is caused by different genotypes d. absolute measurement of genotypic variation in a population e. proportion of phenotypic variation that is caused by the environment
A patient with leukemia has blood cells that are not dividing properly and are out of control. Treatment consists of a bone marrow transplant. How would this help?
What will be an ideal response?
Which of the following constitute the shoot system of a plant? I) leaves II) stems III) roots
A) I only B) I and II C) II and III D) I, II, and III
In addition to its role in DNA repair, homologous recombination is also responsible for generating genetic diversity during what process?
A. mitosis B. meiosis C. DNA replication D. independent assortment of chromosomes E. fertilization