Consider a biallelic locus with alleles A1 and A2. A1 mutates to A2 with a forward mutation rate of 0.0000025. A2 mutates back to A1 with a reverse mutation rate of 0.0000010. What will be the equilibrium frequency of the A1 allele?
a. 0.0407
b. 0.1298
c. 0.1820
d. 0.2857
e. 0.3869
D
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The observation that SNPs account for most of the differences in the coding regions between the human and chimpanzee genomes suggests that ____
a. the two genomes are too different to suggest an evolutionary relationship b. Neanderthals descended directly from chimpanzees c. small changes in amino acid sequences account for big differences in phenotype d. most of the differences in phenotype are due to DNA sequence changes e. humans descended directly from chimpanzees
Human cases of complete myostatin deficiency ____
a. are very common b. are quite rare c. have never been identified d. are easy to study e. result from nutritional deficiencies
Fungi are currently classified as six monophyletic groups based on characteristics of the cells undergoing meiosis.
Answer the following statement true (T) or false (F)
The prokaryotes known as methanogens require ________ environments.
A. aerobic B. acidic C. high salt D. high temperature E. anaerobic