TLS Online TPP Program

#Question id: 5341


Which of the following is incorrect statement regarding sex determination in drosophila?

#Unit 8. Inheritance Biology
  1. It is based on haplo-diploidy sex determination

  2. Presence of the Y chromosome does not determine maleness in Drosophila

  3. It is determine by the number of X chromosomes divided by the number of haploid sets of autosomal chromosomes

  4. Transformer mutation converts a female with an X:A ratio of 1.0 into a phenotypic male

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TLS Online TPP Program

#Question id: 2469

#Unit 2. Cellular Organization

Lamellipodia are located:

TLS Online TPP Program

#Question id: 11410

#Unit 10. Ecological Principles

Biodiversity hot spots, those areas with the greatest number of endemic species. Which of the following criteria to qualify as a hot spot region?

A. It must contain at least 1,500 species of vascular plants as endemics

B. It must have lost at least 70% of its original habitat

C. It must contain at least 500 species of bird species

D- It must contain high numbers of species

TLS Online TPP Program

#Question id: 2521

#Unit 2. Cellular Organization

The sarcoplasmic reticulum must have integral membrane proteins that can:

TLS Online TPP Program

#Question id: 19877

#Unit 13. Methods in Biology

A recombinant DNA molecules is produced by

a) by cutting DNA from two source

b) Joining of two or more DNA fragments from different organism 

c) Joining of two or more DNA fragments originating from different organisms

TLS Online TPP Program

#Question id: 26891

#Unit 10. Ecological Principles

 A researcher working on island biogeography mapped how isolation-controlled immigration (I), and area-controlled extinction (E), will act on number of species present on the islands. He forgot to label the size of the islands (small or large) and the location of the islands (near or far) on the graph.
Using information from MacArthur and Wilson's equilibrium theory, select the option that correctly identifies A, B, C and D in the figure above.