Which of the following statements is correct?
a. Offspring of two different true-breeding varieties are called hybrids.
b. Mendel's pea plants could cross-fertilize but not self-fertilize.
c. True-breeding plants are able to produce a variety of flower colors when self-fertilized.
d. A genetic cross produces the P generation.
a. Offspring of two different true-breeding varieties are called hybrids.
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The basic monomer of a protein that can be jointed by peptide bonds using dehydration synthesis reactions.
A) Polarity B) Compound C) Denaturation D) Monosaccharides E) Hydrogen bonds F) Element G) Triglycerides H) Amino acids I) Tertiary structure J) Active site
Which statement about the geologic time scale
is incorrect? a. Mammals originated early in the Mesozoic era. b. Adaptive radiation of flowering plants, insects, and birds took place during the Mesozoic era. c. Mass extinction of the dinosaurs occurred about 65 million years ago. d. Reptiles originated during the Paleozoic era. e. Eukaryotes originated during the Proterozoic eon.
The body’s first line of defense includes all of the
following EXCEPT a. intact skin. b. linings of body cavities. c. complement. d. chemical protection. e. resident populations of microbes.
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-COOH is a(n)
A. fatty acid. B. amino acid. C. glycerol. D. steroid.