Polypoidy, which is widespread among plants, can arise from which of the following processes? (Choose all that apply)
A. duplication of a complete set of
chromosomes in a single species
B. hybridization between related species
followed by duplication
C. deletion of long stretches of noncoding
DNA over time
D. introduction of DNA from one species into
another via insects and birds
E. expansion of regions of highly repetitive
DNA
A,B
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What term describes an organism with two complete sets of chromosomes from two different species?
A. Tetraploid B. Aneuploid C. Allodiploid D. Allotetraploid
Asexual reproduction _____
a. results from fertilization
b. produces genetic clones c. is more similar to meiosis than mitosis d. leads to increased genetic variation in offspring e. involves crossing over
Protein hormones include
a. estrogens. b. growth hormone. c. melatonin. d. thyroid hormone. e. oxytocin.
Parents with normal pigmentation have an albino child. What is the chance that their next child will
have normal pigmentation? A. 0 percent B. 25 percent C. 33 percent D. 50 percent E. 75 percent