Chromosome Structure

Question 1

Where are these 3 centromeres positioned?

1. Acrocentric
2. Telocentric
3. Metacentric

Answer 1

1. Near the end
2. At the very end
3. Near the middle

Question 2

What is the definition of a centromere?

Answer 2

The region at which two sister chromatids are joined. It can be seen as a visible constriction along the length of the chromosome.

Question 3

Explain ‘Kinetochores’

Answer 3

They form during prophase on either side of the centromere. They capture the positive ends of the spindles, connecting them to the chromosomes.

Question 4

What is chromatin

Answer 4

an association between chromosomal dna and some specific proteins

Question 5

What are some of the functions of the proteins in chromatin?

Answer 5

1. packaging and protecting the dna
2. dna replication
3. facilitating gene expression

Question 6

Explain Heterochromatin

Answer 6

It is highly condensed and inactive in gene expression, consisting of almost exclusively repetitive dna sequences

Question 7

What is the definition of a chromosome?

Answer 7

components of living cells that carry genetic information in the form of dna