Question 1

Based on the image provided, how many chromosomes are present in this cell, and is the cell haploid or diploid?

Accepted Answer

There are 8 chromosomes; the cell is diploid.

Question 2

Which of the following best describes the stage of mitosis shown in the image?

Accepted Answer

Prophase, because the chromosomes are condensed but not yet aligned.

Question 3

If this cell undergoes meiosis, how many chromosomes will each gamete contain?

Accepted Answer

$$4$$

Question 4

If crossing over occurs before gene C in a genotype ABCDEF/abcdef, which of the following is a possible gamete?

Accepted Answer

ABcdef

Question 5

Which statistical test would be most appropriate to analyze the relationship between the amount of time a termite spends on a line and the color of the ink (black and blue)?

Accepted Answer

Linear regression

Question 6

In linkage mapping, what does a recombination frequency of 1% correspond to in map units?

Accepted Answer

$$1$$ centimorgan (cM)$

Question 7

If genes A, B, and C are linked with the following distances: A is 32 cM from C, C is 6 cM from B, and A is 38 cM from B, what is the correct gene order?

Accepted Answer

A - C - B

Question 8

Which of the following is an example of co-dominance in humans?

Accepted Answer

ABO blood type, where both $$I^A$$ and $$I^B$$ alleles are expressed in $$I^A I^B$$ individuals.

Question 9

Sarah has blood type A. Which of the following are possible blood types of her parents?

Accepted Answer

O, A, or AB

Question 10

Which of the following best describes pleiotropy?

Accepted Answer

A single gene affects multiple traits.

Question 11

If a plant with genotype RRTTCC is crossed with a plant with genotype rrttcc, what will be the genotype of the F1 offspring?

Accepted Answer

RrTtCc

Question 12

Which of the following is NOT a pattern of inheritance described by Mendel?

Accepted Answer

Co-dominance

Question 13

Which of the following best explains why linked genes do not assort independently?

Accepted Answer

They are located close together on the same chromosome.

Question 14

If the recombination frequency between two genes is 50%, what does this indicate?

Accepted Answer

The genes are likely on different chromosomes or far apart on the same chromosome.

Question 15

Which of the following is an example of a gene x environment interaction?

Accepted Answer

A plant's flower color changes depending on soil pH.

Extensions to Mendelian Genetics: Linkage, Recombination, and Non-Mendelian Inheritance

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