Touchdown  PCR is initiated at very high annealing temperatures, which allow only perfectly matched primer-template DNA hybrids to form and support amplification. The annealing temperature is dropped in a stepwise fashion with each cycle of PCR. 

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Multiple Alleles

Presence of more than two alleles at a locus in a group of diploid individuals

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#Unit 8. Inheritance Biology

PLUMAGE PATTERNS IN DUCKS

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Compound heterozygote 

An individual with two different recessive alleles at a locus that result in a recessive phenotype. 

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#Unit 8. Inheritance Biology

Reciprocal crosses

Pair of crosses in which the phenotypes of the male and female parents are reversed

 

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Genomic imprinting 

Differential expression of a gene that depends on the sex of the parent that transmitted the gene.

 

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