An individual basidium ultimately produces
A. four haploid spores, each genetically different.
B. eight diploid spores.
C. four genetically identical haploid spores.
D. eight haploid spores, of which there are two each of four different genetic types.
E. eight identical haploid spores.
Answer: A
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deficiency.
a. phosphorus b. magnesium c. potassium d. oxygen e. nitrogen
Mutations at intron-exon splice sites in DNA can lead to a(n) _____
a. short or truncated protein b. protein that has a change in polarity c. change in hydrophobicity d. unspliced mRNA e. mRNA that cannot be translated
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the substitution of one base pair for another. b. the substitution of more than one base pair. c. the insertion or deletion of one or two base pairs. d. the substitution of a stop codon for an amino acid-specifying codon. e. the substitution of a start codon for an amino acid codon.
A certain infectious disease can cause swellings on the aortic semilunar valve. The valve will then fail to close properly, resulting in ________
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