Nitrifying bacteria such as Nitrosomonas and Nitrosospira are soil and aquatic bacteria of considerable ecological significance. They oxidize ammonia to nitrite. They are called as

TLS Online TPP Program

#Question id: 33697

#Unit 2. Cellular Organization

Hb Kenya, another fused hemoglobin. The fusion must have resulted from unequal crossing over between 

TLS Online TPP Program

#Question id: 33698

#Unit 2. Cellular Organization

Globin gene clusters are found on chromosomes

TLS Online TPP Program

#Question id: 33699

#Unit 2. Cellular Organization

rRNA genes are contained in a tandem cluster or clusters. Sometimes these regions are called rDNA. These rDNA clusters are characterised by 

A. Tandem cluster 

B. Random cluster

C. Highly variable SNP/RFLP

D. Circular RFLP map

TLS Online TPP Program

#Question id: 33700

#Unit 2. Cellular Organization

The particular chromosomal regions associated with a rDNA clusters are called as

TLS Online TPP Program

#Question id: 33701

#Unit 2. Cellular Organization

Select all correct options 

A. Satellite DNA has a very short repeating sequence and no coding function.

B. Satellite DNA occurs in small blocks that can have distinct physical properties.

C. Satellite DNA is often the major constituent of facultative heterochromatin.

TLS Online TPP Program

#Question id: 33702

#Unit 2. Cellular Organization

Choose true and false

A. Repetitive DNA is characterized by its relatively slow rate of renaturation.

B. Satellite DNA consists of very large sequences repeated many times in tandem in large clusters.

C. In humans, the α satellite family, found in centromeric regions, has a repeat unit length of 171 bp.

D. In mammalian genomes satellite DNA is less than 10%, but in the fruit fly Drosophila virilis, it amounts to 50%.