EOC Genetics

Why are insertion and deletion (frameshift) mutations so harmful?

• They change all of the codons from the mutation on down the line, which changes the amino acid sequence

• They insert things that an organism doesn't need.

• They often delete things that organisms need.

• Insertion and deletions are not any more harmful than substitution mutations.

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NGSS.HS-LS3-2

Condition caused by nondisjunction at pair 21 during meiosis.

Individuals have an extra chromosome

at pair 21, or a total of 47 chromosomes.

Also called Trisomy 21.

• Cystic Fibrosis

• Translocation

• Hemophilia

• Down Syndrome

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Using biotechnology to change the genetic makeup of an organism is called

• Tissue Culturing

• Biotechnology

• Cloning

• Genetic Engineering

A student performed a gel electrophoresis experiment. The results are represented in the diagram

below. Compared to the fragments at the top of the gel, the fragments at the lower end are

• larger, and move slower

• larger, and move faster

• smaller, and move faster

• smaller, and move slower

Which of the following best describes the flow of genetic information in a cell?

• DNA to RNA to Protein

• RNA to DNA to Protein

• Protein to RNA to DNA

• DNA to Protein to RNA

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NGSS.HS-LS1-1

What is the term for a change in the DNA sequence?

• Mutation

• Meiosis

• Mitosis

• Recombination

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NGSS.HS-LS3-2

What is the term used to describe the movement of alleles between populations?

• Genetic drift

• Gene flow

• Natural selection

• Mutation

Which choice best represents the genotype of this cross?

• Yy: 2 yy: 0 YY

• Yy: 2 yy: 0 YY

• Yy: 1 yy: 0 YY

• Yy: 3 yy: 0 YY

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NGSS.HS-LS3-1

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What is the phenotype of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

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NGSS.HS-LS3-1

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A pet rabbit named Sparky has a dark coat (D, the dominant allele) and was mated with an albino female rabbit named Lucy (d, the recessive allele). A litter of six offspring were born, all with dark coats. Lucy was then mated with a different dark coated rabbit named Elwood. Some of Elwood's and Lucy's litter were dark coated and other were albinos. What is the MOST probable genotype for Sparky, Lucy, and Elwood?

• Sparky DD
  Lucy dd
  Elwood Dd

• Sparky Dd
  Lucy dd
  Elwood dd

• Sparky DD
  Lucy Dd
  Elwood Dd

• Sparky Dd
  Lucy dd
  Elwood DD

Tags

NGSS.HS-LS3-1

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