Questions below are based on the following information. Certain genes produce certain traits in an organism. The offspring of complex organisms result from a combination of genes from two different parents. Every individual has two genes for every trait, and each parent passes on only one of its two genes for each trait (this gene is also called an allele) so that the offspring ends up with two alleles for every trait, one from the mother and one from the father as shown in Figure 1. The combination of the two alleles that individuals possess for a certain trait is called... Show more Questions below are based on the following information. Certain genes produce certain traits in an organism. The offspring of complex organisms result from a combination of genes from two different parents. Every individual has two genes for every trait, and each parent passes on only one of its two genes for each trait (this gene is also called an allele) so that the offspring ends up with two alleles for every trait, one from the mother and one from the father as shown in Figure 1. The combination of the two alleles that individuals possess for a certain trait is called their genotype. How that combination of traits is expressed physically is called the phenotype. Often one allele is dominant over another, recessive, allele. This means that the trait of the dominant allele is the only one that is expressed even though the individual also possesses the allele for the other trait. In cases of incomplete dominance, the combination of the dominant and recessive alleles produces a phenotype that is different from either of the traits held by the separate alleles. A certain species of animal has two alleles for height. The H allele holds the trait for the tall phenotype, while the h allele codes for the short phenotype. The trait for height for this animal is incompletely dominant. Figure 2 displays a family tree showing some of the genotypes and phenotypes where the lines indicate the relationship between parents and offspring. Show less
Questions below are based on the following information.
Certain genes produce certain traits in an organism. The offspring of complex organisms result from a combination of genes from two different parents. Every individual has two genes for every trait, and each parent passes on only one of its two genes for each trait (this gene is also called an allele) so that the offspring ends up with two alleles for every trait, one from the mother and one from the father as shown in Figure 1.
The combination of the two alleles that individuals possess for a certain trait is called their genotype. How that combination of traits is expressed physically is called the phenotype. Often one allele is dominant over another, recessive, allele. This means that the trait of the dominant allele is the only one that is expressed even though the individual also possesses the allele for the other trait. In cases of incomplete dominance, the combination of the dominant and recessive alleles produces a phenotype that is different from either of the traits held by the separate alleles. A certain species of animal has two alleles for height. The H allele holds the trait for the tall phenotype, while the h allele codes for the short phenotype. The trait for height for this animal is incompletely dominant. Figure 2 displays a family tree showing some of the genotypes and phenotypes where the lines indicate the relationship between parents and offspring.
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