+ mark 29) Which of the following provides an example of epistasis? A) In cacti, there...

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+ mark 29) Which of the following provides an example of epistasis? A) In cacti, there are several genes for the type of spines. B) Recessive genotypes for each of two genes (aabé) results in an albino com snake. C) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes. D) In rabbits and many other mammals, one genotype (cc) prevents any fur color from developing. E) The allele b17 produces a dominant phenotype, although b1 through b16 do not. 30) An experimenter has altered the 3' end of the tRNA corresponding to the amino acid methionine in such a way as to remove the 3' AC. Which of the following hypotheses describes the most likely A) The nearby stem end will pair improperly. B) The anticodon will not bind with the mRNA codon. C) tRNA will not form a cloverleaf. D) The amino acid methionine will not bind. E) The aminoacylsynthetase will not be formed. 31) SRY is best described in which of the following ways? A) an autosomal gene that is required for the expression of genes on the X chromosome B) a gene region present on the Y chromosome that triggers male development C) an autosomal gene that is required for the expression of genes on the Y chromosome D) a gene present on the X chromosome that triggers female development E) a gene required for development, and males or females lacking the gene do not survive past early childhood 32) The human X and Y chromosomes A) are both present in every somatic cell of males and females alike. B) include only genes that govern sex determination. C) are of approximately equal size and number of genes. D) are almost entirely homologous, despite their different names. E) include genes that determine an individual's sex. 30) 31) 32) + mark 29) Which of the following provides an example of epistasis? A) In cacti, there are several genes for the type of spines. B) Recessive genotypes for each of two genes (aabé) results in an albino com snake. C) In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes. D) In rabbits and many other mammals, one genotype (cc) prevents any fur color from developing. E) The allele b17 produces a dominant phenotype, although b1 through b16 do not. 30) An experimenter has altered the 3' end of the tRNA corresponding to the amino acid methionine in such a way as to remove the 3' AC. Which of the following hypotheses describes the most likely A) The nearby stem end will pair improperly. B) The anticodon will not bind with the mRNA codon. C) tRNA will not form a cloverleaf. D) The amino acid methionine will not bind. E) The aminoacylsynthetase will not be formed. 31) SRY is best described in which of the following ways? A) an autosomal gene that is required for the expression of genes on the X chromosome B) a gene region present on the Y chromosome that triggers male development C) an autosomal gene that is required for the expression of genes on the Y chromosome D) a gene present on the X chromosome that triggers female development E) a gene required for development, and males or females lacking the gene do not survive past early childhood 32) The human X and Y chromosomes A) are both present in every somatic cell of males and females alike. B) include only genes that govern sex determination. C) are of approximately equal size and number of genes. D) are almost entirely homologous, despite their different names. E) include genes that determine an individual's sex. 30) 31) 32)

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29 CORRECT ANSWER D In rabbits as in other animals several genes encodes for coat color The one loca... View the full answer