Part E F Increasing the Gene Pool

There are multiple alleles for the ABO blood group. Why are only two of these alleles present in any one individual?

• Each parent contributes only one allele for the ABO blood group to the offspring.

• There are not enough nucleotides in a red blood cell to produce a third allele.

• Each allele in the ABO group must be dominant or recessive

• Blood group alleles are not segregated during meiosis.

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NGSS.HS-LS3-1

Which term(s) best describes the inheritance of human blood types?

• incomplete dominance and multiple alleles

• codominance and epistasis

• codominance and multiple alleles

• incomplete dominance and codominance

What type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?

• Codominance
• Incomplete dominance
• Polygenic traits

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NGSS.HS-LS3-1

NGSS.HS-LS3-3

Human blood type is determined by multiple alleles (A, B, and O). Which ratio would result from a cross between a man with Type AB blood and a woman with Type O blood?

• A. 50% Type A, 50% Type O

• B. 75% Type A, 25% Type B

• C. 50% Type A, 50% Type B

• D. 100% Type O

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

A geneticist studying the inheritance of flowers performed a series of crosses. The results from the crosses are listed in the data table above. Based off the data above, which mode of inheritance is flower color?

• A. codominance

• B. incomplete dominance

• C. complete dominance

• D. polygenic

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

How many phenotypes are there in ABO blood types?

• 3
• 4
• 6
• 12

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NGSS.HS-LS3-3

Skin colour, height, hair colour, and eye colour are human traits that show high variations--these traits demonstrate

• incomplete dominance

• codominance

• multiple alleles

• polygenic inheritance

A trait is varies in rabbits more than classic Mendelian dominance, or non-Mendel dominances. This trait is controled by ONE gene having four alleles in the population, but only two are inherited. This demonstrates the pattern of inheritance with

• gene variations

• codominance

• polygenic epistasis

• multiple alleles

A circumstance where the expression of a trait is affected by the expression of one or more independently inherited genes--it either obliterates the trait or modifies it.

• codominance

• epistasis

• epitome

• enzyme

Human height is controlled by many genes, at least 5. Another gene, D, controls achondroplasia dwarfism which is dominant if heterozygous (DD is a lethality). This gene is ___ to height.

• epistatic

• codominant

• multiple allelic

• incompletely dominant