Question 1

During eukaryotic cell division, what is the primary function of the centromere?

Accepted Answer

To attach sister chromatids together via protein complexes

Question 2

Which of the following best describes sister chromatids?

Accepted Answer

Two identical DNA molecules joined together, formed during DNA replication

Question 3

What is the role of cohesin proteins during cell division?

Accepted Answer

They attach sister chromatids along their lengths

Question 4

A duplicated chromosome consists of two sister chromatids. What is true about these chromatids?

Accepted Answer

They are joined copies of the original chromosome

Question 5

Which region of the chromosome is made up of repetitive DNA sequences and is essential for proper chromosome segregation?

Accepted Answer

Centromere

Question 6

If the cohesin proteins fail to function during mitosis, what is the most likely outcome?

Accepted Answer

Sister chromatids will separate prematurely

Question 7

Which of the following equations best represents the relationship between the number of chromosomes ($$n) $$and the number of sister chromatids ($$c) $$after DNA replication but before cell division?

Accepted Answer

$$c = 2n$$

Question 8

Why is the centromere critical during mitosis?

Accepted Answer

It is the site where spindle fibers attach to pull sister chromatids apart

Question 9

Which statement about the distribution of chromosomes during eukaryotic cell division is correct?

Accepted Answer

Each daughter cell receives one copy of each chromosome

Question 10

A mutation causes the centromere region to lack repetitive DNA sequences. What is the most likely effect?

Accepted Answer

Improper attachment of spindle fibers, leading to chromosome missegregation

Question 11

Which of the following best explains why sister chromatids are considered identical?

Accepted Answer

They are produced by DNA replication of the same chromosome

Question 12

What would happen if the centromere was deleted from a chromosome?

Accepted Answer

The chromosome would not segregate properly during cell division

Distribution of Chromosomes During Eukaryotic Cell Division

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