If a dihybrid cross is begun with a P1 generation of a true-breeding plant that produces smooth and yellow peas
(smooth and yellow are both dominant traits), crossed with a plant that produces wrinkled green peas (wrinkled and green
are both recessive traits), the F1 plants will all be smooth and yellow.
a. True
b. False
ANSWER: True
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The voltage across a membrane is called the ____
a. electrochemical gradient b. turgor pressure c. membrane potential d. chemical gradient e. electron potential
The structures labeled "4" are
a. trichocysts. b. cilia. c. flagella. d. pili. e. pellicles.
Characteristics gained during an individual's lifetime are
A. inherited. B. dominant. C. acquired. D. mutations.
What is a recessive disorder?
A) a genetic disorder that involves change in chromosome structure B) a genetic disorder that involves change in chromosome number C) a genetic disorder that will express itself in the presence of two recessive alleles D) a genetic disorder that will express itself in the presence of one functioning allele E) a genetic disorder with two functioning alleles