TLS Online TPP Program

#Question id: 22949


How CONSTANS gene and its encoded protein involved in translating day length into a signal that converts a vegetative shoot meristem into a floral meristem?

#Unit 5. Developmental Biology
  1. CONSTANS protein is degraded in the dark, but accumulates in the leaves as the days get longer.
  2. CONSTANS protein is degraded in the light, and so accumulates in the leaves as the days get shorter.
  3. Peak expression of CONSTANS occurs at mid-morning.
  4. The CONSTANS gene regulates the circadian clock.
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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?