Match the following description with an appropriate term Trait Gene Genotype Homozygous Dominant allele Phenotype Heterozygous Allele Recessive allele A. The observable physical characteristics of an organism B. The genetic makeup that contributes to phenotype C. The individual genetic units that produce a characteristic D. Variation of a same characteristic E. Variation of a same gene F. Two copies of a same gene have same alleles G. Two copies of a same gene have different alleles H. This allele shows its trait when it combines with other alleles I. The trait from this allele is hidden when it combines with other alleles
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The observable physical characteristics of an organism: This is the physical appearance of an organism, which is determined by its genetic makeup and environmental factors. The term for this is **Phenotype**. Show more…
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Match each of the following descriptions of selection on a single gene trait to their predicted effect on allele frequencies. The heterozygote has the highest fitness. The homozygotes have the highest fitness. The recessive homozygous phenotype has the highest fitness. The genotype with the highest fitness is whichever is rarest. Options: The recessive allele eventually reaches fixation One allele is usually lost, which depends on the starting allele frequencies Both alleles maintained. Both alleles maintained, but allele freqencies fluctuate over time.
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4. Use the terms below to complete the sentences. Dominant genotype locus recessive Alleles homozygous phenotype heterozygous Different forms of a gene are called _________ and their location on the chromosomes is called the _________. The physical expression of a gene is the _________ while the form of the genes is called the _________. If the two alleles for a trait are identical, they are said to be _________ and if they are different they are _________. The form of an allele that is masked by the other form is said to be _________, while the form that is expressed in the heterozygote is _________.
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