Which scenario best illustrates the process of natural selection?
A. a chameleon's color changes to brown as it sits on a log.
B. a bear learns to find food at a garbage dump.
C. a population of mosquitoes develops resistance to a pesticide.
D. a population of foxes increases as more prey becomes available.
E. a plant loses its leaves in a drought.
Answer: C
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SCNT with human cells is called _____
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Two kinds of mice live in the same area but one is black and the other is brown. The answer to which of the following questions would be most valuable in determining if they are of the same species.
A. Do members of the two kinds mate with one another and have offspring that reproduce? B. Do the two kinds have other physical differences other than color? C. Are the brown mice eaten more often by owls than black mice? D. Do the brown mice climb trees more often than black mice?
Sex-linked genes are located on
A) the autosomal chromosomes. B) the Y chromosome only. C) the X chromosome only. D) both the X chromosome and the Y chromosome.
A random change in the DNA nucleotide base sequence is called a ________
Fill in the blank(s) with correct word