If the number of chromosomes in an animal's gametes is 20, then how many chromosomes would a somatic cell from that animal contain?
a. 10
b. 20
c. 40
d. 80
Answer: c. 40
Biology & Microbiology
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Which of the following is an embryonic tissue
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_____, which probably evolved from infoldings of the plasma membrane, first appear in the fossil record about 1.8
million years ago.
a. Eukaryotes b. Archaea
c. Plants d. Bacteria e. Photosynthesizers
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West Nile virus or herpes virus infection can lead to the dangerous condition of ____
a. epilepsy b. paralysis c. encephalitis d. meningitis e. multiple sclerosis
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Protein molecules are polymers (chains) of _____.
A. DNA molecules B. fatty acid molecules C. sucrose molecules D. amino acid molecules E. purines and pyrimidines
Biology & Microbiology