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Chromosomal Landmarks Quiz

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Questions and Answers

Where are the nucleolar organizer regions (NORs) located in humans?

Centromeres of chromosomes 4, 8, and 12

Long arms of chromosomes 1, 6, and 18

Telomeres of chromosomes 3, 7, and 19

Short arms of chromosomes 13, 14, 15, 21, and 22 (correct)

What is the composition of each unit in the nucleolar organizer regions (NORs) in eukaryotes?

Four genes coding for 22S, 7.8S, and 25S ribosomal RNA

Three genes coding for 18S, 5.8S, and 28S ribosomal RNA (correct)

Two genes coding for 20S and 35S ribosomal RNA

Five genes coding for 16S, 6.8S, and 30S ribosomal RNA

Where are the 5S rDNA genes found in higher eukaryotes?

In the centromeres of chromosomes

On the long arms of chromosomes

On the telomeres of chromosomes

In clusters in regions distinct from the major unit rDNA repeats (correct)

What type of chromosomal landmarks are nucleolar organizer regions (NORs)?

Chromosomal landmarks consisting of tandemly repeated sequences of ribosomal genes Signup and view all the answers

Which chromosomes have the NORs in humans?

13, 14, 15, 21, and 22 Signup and view all the answers

মানুষের কোন ক্রোমোসোমে নিউক্লিওলার অর্গানাইজার রিজন (NORs) অবস্থিত?

ক্রোমোসোম 13 Signup and view all the answers

নিউক্লিওলার অর্গানাইজার রিজন (NORs) এর কি বিশেষ উদ্দেশ্য আছে?

Ribosomal RNA synthesis Signup and view all the answers

উচ্চ ইউকারিওটে কোন অঞ্চলে 5S rDNA জিন গুলি পাওয়া যায়?

নিউক্লিওলার অর্গানাইজার রিজন (NORs) Signup and view all the answers

18S, 5.8S, 28S rRNA-র coding genes-এর প্রতিটি unit-ের composition হ'ল:

$3$ genes Signup and view all the answers

POLYTENE CHROMOSOME-র কি বৈশিষ্ট্য?

Multiple copies of the same chromosome attached together Signup and view all the answers