You are studying a gene that controls ossicone (horn) length in giraffes. The wild-type long-ossicone allele (L) is dominant to the mutant short-ossicone (l) allele. However, the L allele is only 60% penetrant. You cross two heterozygous giraffes. What proportion of offspring would you expect to exhibit the long-ossicone phenotype? Assume the penetrance of L applies equally to both homozygotes and heterozygotes. (HINT: how will the penetrance affect the expression of the dominant phenotype) 0.40 0.45 0.55 0.60 0.75
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You are studying a gene that controls horn length in giraffes. The wild-type long allele (L) is dominant to the mutant short- (l) allele. However the L allele is only 50% penetrant. Assume the penetrance of L applies equally to both homozygotes and heterozygotes. You cross two heterozygous giraffes. What proportion of offspring would you expect to exhibit the long horn phenotype?
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You are studying a gene that controls ossicone (horn) length in giraffes. The wild-type long-ossicone allele (L) is dominant to the mutant short-ossicone (l) allele. However, the L allele is only 60% penetrant. You cross two heterozygous giraffes. What proportion of offspring would you expect to exhibit the long-ossicone phenotype? Assume the penetrance of L applies equally to both homozygotes and heterozygotes. 0.40 0.45 0.55 0.60 0.75
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In cattle, long horns (L) are dominant over short horns (l) and a black coat (B) is dominant over a white coat (b). Determine the phenotypes (ratio) of the following cross: llBb x Llbb – parental genotype Draw a Punnett square of your work.
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