The chromosome diagram shown below represents a eukaryotic chromosome stained by

Question

The chromosome diagram shown below represents a eukaryotic chromosome stained by G (Giemsa) banding.

PART A - Indicate the heterochromatic and euchromatic regions of the chromosome, and label the chromosome's centromeric and telomeric regions.

PART B -  What term best describes the shape of this chromosome? acrocentric, metacentric, or telocentric?

PART C - Do you expect the centromeric region to contain facultative heterochromatin? YES or NO?

PART D - Where is it more likely to find the DNA sequence encoding the digestive enzyme amylase?

A) telomeric region

B) icentromeric region

C) heterochromatic region

D) euchromatic region

Explanation / Answer

Part A:

Euchromatin region (B)

Heterochromatin region (D)

Telomeric region (A)

Centromeric region (C)

PART B.

Acrocentric

PART C

False. Centromeres contain Constitutive heterochromatin.

PART D

(d) euchromatic region.

[Euchromatin comprises the most active portion of the genome within the cell nucleus. 92% of the human genome is euchromatic.The remainder is called heterochromatin.]

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