Fish, penguin and Dolphin are independently evolved similar traits as a result of having to adapt to similar environments or ecological niches.

A. On a molecular level, this can happen due to random mutation in unrelated taxon to adaptive changes

B. This is the example of divergent evolution, occurred due to similar group of organisms inhabiting different environments

C. Similar phenotype are produced by identical change in orthologous gene

D. This is the example of convergent evolution, occurred due to similar group of organisms inhabiting different environments

Which of the following is the correct combination?

TLS Online TPP Program

#Question id: 23257

#Unit 13. Methods in Biology

Centromeric probes are useful in identifying 

TLS Online TPP Program

#Question id: 23258

#Unit 13. Methods in Biology

If the probes are hybridized at the ends of the chromosome then they are called as

TLS Online TPP Program

#Question id: 23279

#Unit 13. Methods in Biology

What will be the value of D if sin angle is 90o and oil immersion is used at λ=700?

TLS Online TPP Program

#Question id: 23285

#Unit 8. Inheritance Biology

Chromosome are classified into four basic term, 

Chromosome
A) Metacentric chromosome	i) centromeres present at the end of the chromosome
B) Submetacentric chromosome	ii) chromomere near the end of the chromosomes
C) Acrocentric chromosome	iii) Centromere in the middle of the chromosome and divides the chromosome into two equal arms.
D) Telocentric chromosome	iv) The centromere is present near the middle and divides the chromosome into two unequal arms

TLS Online TPP Program

#Question id: 23286

#Unit 8. Inheritance Biology

Individual chromosomes may lose or gain parts and the order of genes within a chromosome may become altered. These variations in the number and structure of chromosomes are termed as

TLS Online TPP Program

#Question id: 23287

#Unit 8. Inheritance Biology

Chromosome mutations can be grouped into three basic categories:

I) Chromosome rearrangements

II) Aneuploidy

III) Polyploidy

these mutation alters the number and structure of chromosomes such as,

 a) One or more individual chromosomes are added or deleted

b) The loss of a chromosomal segment

c) A piece of a chromosome might be duplicated, deleted, or inverted

d) One or more complete sets of chromosomes are added

e) In which one or more copies of a DNA segment is produced

Find out the correct pairing of chromosomal mutations,