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MBG*2040 Midterm Review: Basic Principles of Heredity

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MBG*2040 Midterm Review: Basic Principles of Heredity

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Questions and Answers

What is penetrance?

The degree to which a phenotype is expressed

The proportion of genes in an individual that are expressed

The number of alleles present for a particular gene

The proportion of individual organisms with a particular genotype that express the expected phenotype (correct)

What does expressivity refer to?

The number of phenotypes produced by a single genotype

The degree to which a phenotype is expressed, varying from mild to severe (correct)

The proportion of individual organisms that express a gene

The proportion of genes expressed in an individual

What is the term used to describe the masking of the expression of one gene by another?

Penetrance

Incomplete dominance

Complementation

Epistasis (correct)

What do temperature-sensitive alleles like the Himalayan allele in rabbits exhibit?

Varying expressivity based on the environment Signup and view all the answers

Which term refers to a functional enzyme or protein being produced?

Wildtype allele Signup and view all the answers

What is the main difference between penetrance and expressivity?

Penetrance varies among individuals, while expressivity varies within an individual. Signup and view all the answers

What is the name of the father of genetics?

Gregor Johann Mendel Signup and view all the answers

Which term describes the law that states alleles segregate during gamete formation?

Mendel's 1st Law: Segregation Signup and view all the answers

What inheritance pattern involves an affected individual most likely being heterozygous?

Autosomal Dominant Trait Signup and view all the answers

In incomplete dominance, what is the phenotype of a heterozygous individual?

Mix of homozygous phenotypes Signup and view all the answers

What type of alleles are characterized by exhibiting phenotypes of both homozygotes at the same time?

Neomorphic Alleles Signup and view all the answers

Which law of inheritance states that BB, Bb, and bb differ phenotypically?

Complete Dominance Signup and view all the answers