Mendelian Genetics

Best term that describes the transmission of traits from one generation to the next.

• Heredity

• Genetics

• Breeding

• Hybridization

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Punnett squares can be used to predict the probability of:

• having an inherited disease or a genetically determined physical trait

• being exposed to a contagious disease and contracting it

• both of the above

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If two people who are both carriers for a genetically inherited fatal recessive disease decide to become parents, what will be the odds that their children will also be carriers?

• 1 out of 4

• 2 out of 4

• 3 out of 4

• 4 out of 4

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If a woman is homozygous normal and her husband is heterozygous for a genetically inherited recessive disease and they decide to become parents, what is the probability that they will have a healthy child?

• 1 out of 4

• 2 out of 4

• 3 out of 4

• 4 out of 4

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If two parents are homozygous for a genetically inherited recessive trait, what is the probability that they will have a child who does not have this trait in his or her phenotype?

• 0%

• 25%

• 50%

• 100%

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The idea that for any particular trait, the pair of alleles of each parent separate and only one allele from each parent passes to an offspring is Mendel's principle of:

• independent assortment

• hybridization

• segregation

In the diagram above, what accounts for the green pea seed in the f2 generation?

• The yellow allele is dominant over the green one.

• The f1 generation parents are homozygous yellow.

• On average, 1 out of 4 offspring of heterozygous parents will be homozygous recessive.

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Phenotype refers to the ______________________ of an individual.

• genetic makeup

• actual physical appearance

• recessive alleles

Polygenic traits are ones that are:

• controlled by more than just a single pair of alleles

• responsible for a number of traits in the phenotype

• found in either men or women but not both

Some people have AB blood types for the ABO blood system. They have all of the characteristics of both type A and type B blood--they are not a blend of them. The inheritance pattern responsible for this is referred to as:

• dominance

• blending

• codominance