In pea plants, round peas are dominant (R) and shriveled peas are recessive (r), and yellow peas (shown as light gray in the Punnett square) are dominant (Y) and green peas (dark gray) are recessive (y). Using this information and the partial Punnett
square shown, what phenotype should be in the square labeled B?
A) round and yellow
B) shriveled and yellow
C) shriveled and green
D) round and green
Answer: D
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If you crossed a true-breeding yellow seed plant (AA) with heterozygous yellow seed plant (Aa):
A. offspring genotypes would be 1 AA : 2 Aa. B. offspring genotypes would be 1 Aa: 1 aa. C. offspring genotypes would be 1 AA : 1 Aa. D. offspring phenotypes would be ½ yellow seed and ½ green seed. E. offspring genotypes would be 1 Aa : 1 aa and would be ½ yellow seed and ½ green seed.
The nutrients that a plant needs are for normal growth and development are acquired through the ____
a. Sun b. rain c. leaves d. roots e. bark
Most of the water absorbed by the plant enters through the
A. root hairs. B. root cap. C. stomata. D. lenticels. E. root apical meristem.
During meiosis, a hexaploid hybrid spontaneously eliminates one set of chromosomes (eliminates 1n). What is the most likely result of this deletion?
A. The hybrid will be able to reproduce with one of the parental species. B. The hybrid will be able to reproduce only by self-fertilization. C. The hybrid will no longer be polyploid. D. The hybrid will no longer be able to reproduce.