Modern Genetics

Which of the following would be an example of genetic engineering?

• Examining the rate at which a genetic disease occurs in a population

• Determining if there is a significant difference between expected data and observed data

• Crossing two plants and seeing unique combinations of genes in their offspring

• Inserting a form of a gene that produces functional protein into the DNA of a person with a genetic disease

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When more than two versions of a gene for a particular trait exist in the human population, it is a ____________________ trait.

• sex-linked

• polygenic

• epistatic

• multiple allele

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The process of transfering DNA from one organism into a different organism to alter its DNA is considered

• genetic engineering

• sexual reproduction

• a mutation

• pleiotropy

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A gene that is found on the X or Y chromosome is called a

• codominant gene

• sex chromosome

• somatic gene

• sex-linked gene

True or False: Males always inherit their X chromosome from their mother

• True

• False

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If a woman is a carrier for an X-linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true?

• All sons will have hemophilia

• all daughters will have hemophilia

• 50% of daughters and 50% of sons could have hemophilia

• 100% of sons could have hemophilia and 100% of daughters could be carriers

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Mom is I^Ai and Dad is I^BI^B - what blood types are possible in their children?

• A, B, and AB

• AB and A

• AB and B

• Just B

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If a female fruit fly heterozygous for red eyes (X^RX^r) crossed with a white-eyed male (X^rY), what percent of their offspring would have white eyes?

• 0%

• 25%

• 50%

• 75%

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Some individuals have both round and sickle shaped red blood cells. This is an example of

• multiple alleles

• incomplete dominance

• polygenic trait

• codominance

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What is this a picture of?

• colorblind chart
• carrier chart
• pedigree
• punnett square

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