The genotypes of two F1 plants are SsYy, with S and Y alleles dominant to s and y. If fertilization occurs at random
____________________ (number) genotypes and ____________________ (number) phenotypes will result in the F2
generation. Fill in the blank(s) with the appropriate word(s).
ANSWER: nine; four
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A typical Euglena cell is elongated and bounded by a ________
A. pellicle. B. cytoproct. C. protuberance. D. plasmalemma.
The ultimate evolutionary benefit to a male white-crowned sparrow's singing is to ____
a. attract a mate b. defend his territory c. advertise his availability as a sire d. intimidate rival males e. produce surviving offspring
Energy is defined as ____
a. the capacity to do work b. the movement of atoms and molecules c. movement of electrons d. measurement of food intake e. capacity to store sugar
When an organism reproduces asexually, it produces offspring that are genetically variable
__________________ Indicate whether the statement is true or false.