AnswersFall 24 GSE Biology A ICIntroduction to Genetics

Introduction to Genetics Answers

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In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.

A
The P generation has all straight wings.
B
The P generation has straight wings and curly wings.
C
The F1 generation has all straight wings.
D
The F1 generation has all curly wings.
E
The F1 generation has straight wings and curly wings.
F
The F2 generation has all straight wings.
G
The F2 generation has straight wings and curly wings.
2
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In pea plants, yellow seed color is dominant and green seed color is recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.

A
The P generation has all yellow seeds.
B
The P generation has all green seeds.
C
The P generation has yellow and green seeds.
D
The F1 generation has yellow and green seeds.
E
The F1 generation has all yellow seeds.
F
The F2 generation has all green seeds.
G
The F2 generation has yellow and green seeds.
3

In humans, a cleft chin is dominant and no-cleft is recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.

A
The P generation, F1 generation, and F2 generation will have all cleft chins.
B
The P generation, F1 generation, and F2 generation will have all no-cleft chins.
C
The P generation and F1 generation will have all cleft chins.
D
The F1 generation will have all cleft chins.
E
The P generation and F2 generation will have all no-cleft chins.
F
The P generation and F2 generation will have cleft chins and no-cleft chins.
G
The P generation, F1 generation, and F2 generation will have cleft chins and no-cleft chins.
4

What information did you include in your answer? Check all that apply.

A
DNA is responsible for traits.
B
A section of DNA that codes for a specific trait is called a gene.
C
Half of your DNA comes from each parent.
D
Your traits are a combination of your parents’ traits.
E
DNA is the blueprint for proteins, which play many roles in the body.

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