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DC Biology Final, Part 2

Authored by Sarah Mundy

Biology

11th Grade

Used 7+ times

DC Biology Final, Part 2
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40 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a genotype?

Physical characteristics of an organism

Set of observable characteristics of an organism

Combination of alleles an organism has for a specific trait

Way in which genes are expressed in an organism

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a dihybrid cross involving two traits, what is the ratio of phenotypes in the F2 generation?

9:3:3:1

3:1

1:2:1

1:1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A DNA molecule consists of:

Two strands that run parallel to each other

Three strands

A single strand

Four strands

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best defines codominance?

One allele is completely dominant over another

Both alleles contribute to the phenotype of the heterozygote

Alleles segregate independently during gamete formation

Heterozygotes have an intermediate phenotype

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many chromosomes are present in a normal human gamete?

23

46

22

44

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for the physical expression of an organism's genes?

Genotype

Mutation

Phenotype

Locus

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of polygenic inheritance?

Blood type

Height

Attached earlobes

Widow's peak

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