In cats an X-linked pair of alleles, B and b, controls color of fur. The alleles are incompletely
dominant: B produces black, b produces yellow, and Bb produces tortoise-shell.
(a) A yellow cat had a litter of two tortoiseshell kittens and one yellow. What is the sex of
the yellow kitten?
(b) A tortoiseshell cat brings home a litter of black, yellow, and tortoiseshell kittens. The
color of which sex would tell you the color of the tomcat that produced them?
(c) A yellow male is crossed with a tortoiseshell female. If the female has all male kittens in
her litter of four, what color(s) would they be?
(d) A tortoiseshell cat brings home her litter of black, yellow, and tortoiseshell kittens. By
what method could you possibly decide whether the male parent was the black tomcat
next door? What will be an ideal response?
(a) male
(b) female
(c) 1/2 yellow, 1/2 black
(d) black, female kitten
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a. glycolysis b. photosynthesis c. respiration d. fermentation e. chemosynthesis
The amount of air that moves into and out of the human lungs in each normal breath is termed
a. inspirational capacity. b. reserve volume. c. pleural volume. d. alveolar volume. e. tidal volume.
Which protein is responsible for the initial step in unwinding the DNA helix during replication of the bacterial chromosome?
What will be an ideal response?
A noncompetitive inhibitor decreases the rate of an enzyme reaction by _____
A) binding at the active site of the enzyme B) changing the shape of the enzyme's active site C) changing the free energy change of the reaction D) acting as a coenzyme for the reaction