6-7. MATCHING Match the term on the left with the correct description on the right. Place the letter answer in the blank. A. Dominant Alleles B. Incompletely Dominant Alleles C. Co-Dominant Alleles D. Lethal Alleles Fully expressed whenever present in the genotype, including when present with other alleles that share dominance. \(?\) Full expression results in the death of the individual; usually, but not always, recessive Fully expressed in the phenotype whenever present in the genotype (homozygous or heterozygous) Fully expressed in the phenotype only when present in the homozygous state
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Step 1: Dominant alleles are expressed whenever present in the genotype, even when present with other alleles that share dominance. Show more…
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Match each of the following terms with the best description: (i) incomplete penetrance (ii) variable expressivity (iii) codominance (iv) incomplete dominance a) When heterozygotes display phenotype intermediate between those shown by homozygotes for that allele b) When genotype underlies given phenotype; but not all individuals with that genotype display the phenotype c) When each allele causes distinct phenotype; and heterozygotes exhibit both phenotypes of homozygotes d) When genotype gives rise to range of phenotypes
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Which of the following best describes the equal expression of two alleles? a) codominance b) incomplete dominance c) complete dominance d) epistasis Which of the following best describes an allele that is expressed only in the homozygous condition? a) dominant b) recessive c) codominance d) incomplete dominance
3. Match the term with its description. A. lethal B. pleiotropy C. epistasis D. complementation E. gene redundancy ___ The multiple effects of a single gene on the phenotype of an organism is called _______. ____ When genes at one locus can mask the expression of genes at a second locus. ____ The production of wild-type offspring from a cross between parents that both display the same recessive phenotype illustrates the genetic phenomenon of _______. ____ When homozygous loss-of-function alleles at a locus have no effect on a phenotype. ____ An allele that has the potential to cause the death of an individual
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