Reproductive isolation often occurs due to ____
a. geographic separation
b. species compatibility
c. mutation
d. genetic drift
e. natural selection
ANSWER: a
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Programmed cell death is called _______
A. destruction initiation B. apoptosis C. myogenesis D. morphogens
In the F2 generation, how many genotypic classes could be generated from a dihybrid cross of two heterozygotes in which the genes involved show complete dominance?
A) 3 B) 4 C) 8 D) 9 E) 12
________ use light as their source of energy and organic molecules such as carbohydrates as their source of carbon.
Fill in the blank(s) with the appropriate word(s).
Which term refers to duplication of the complete set of chromosomes in an organism's cell, followed by the separation of the duplicated chromosomes into two new cells?
a. zygote formation b. mitotic cell division c. binary fission d. meiotic cell division