TLS Online TPP Program

#Question id: 13185


If a drop in sea level led Island 1 to double in area, the MacArthur-Wilson model predicts that the number of bird species found there would

#Unit 10. Ecological Principles
  1. Remain unchanged
  2. Experience an initial sharp increase, then decrease and equilibrate at the previous number of species 
  3. Experience an initial sharp decrease, then increase and equilibrate at the previous number of species 
  4. Increase and equilibrate at a new, higher number of species
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TLS Online TPP Program

#Question id: 4880

#Unit 8. Inheritance Biology

There is following normal gene and their restriction site are given

 Mutant phenotype due to mutation that alters EcoRI site 1 occurs in this piece of DNA. There is following analysis of different band in their family (+ present , - absent) 

Visible band

Male Parents I

Female Parents II

Son  ( affected )

Daughter  ( normal)

2 Kb

+

+

-

+

4 Kb

+

+

-

+

5 Kb

+

+

+

+

6 Kb

-

+

+

+

 Which of the following is mode of inheritance of trait?

TLS Online TPP Program

#Question id: 4879

#Unit 8. Inheritance Biology

A wild plant with genes AABBCC was crossed with a triple recessive mutant aabbcc. The F1 male hybrid (AaBbCc) was then back crossed with the triple mutant and the phenotypes recorded are as follows

AabbCc (50), aaBbcc(50), AaBbCc (100), aabbcc (100), AaBbcc (350), aabbCc (350)

Distance between A to B is ----------M----- map unit with ………N…….configuration, distance between B to C is ----O---- map unit with ------P-------configuration?

TLS Online TPP Program

#Question id: 4719

#Unit 8. Inheritance Biology

When a trait exhibits complete co-dominance rather than complete dominance, a cross between heterozygote results deviation of following;

TLS Online TPP Program

#Question id: 4723

#Unit 8. Inheritance Biology

The most common cause of the pleiotropic effect of gene is due to

TLS Online TPP Program

#Question id: 4724

#Unit 8. Inheritance Biology

Which of the following are true about crossing over ?

TLS Online TPP Program

#Question id: 4726

#Unit 8. Inheritance Biology

Which of the following is incorrect regards genomic imprinting?