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TLS Online TPP Program

#Question id: 21951

Eukaryotic chromosome normally visualised in 

#Unit 2. Cellular Organization
  1. anaphase and metaphase /mitotic phases
  2. prophase and metaphase /mitotic phases
  3. Interphase and metaphase/mitotic phases
  4. telophase and metaphase /mitotic phases
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TLS Online TPP Program

#Question id: 15839

#Unit 8. Inheritance Biology

In the yeast cross of ade2 met14 his3 x + + +, a total of 120 tetrads are analyzed. The following tetrad types are found in the numbers shown below each tetrad. The markers ade2, met14, and his3 are abbreviated a, m, and h and the wild type allele of each gene is indicated by +.
 
Use this categorization and the numbers of each type to determine which (if any) of the three markers are linked. For any linked markers, calculate the distance between them in cM.      
To measure the distance between two linked His– mutations, you cross a his2– mutant to a his4– mutant and then dissect 100 tetrads. Your lab partner records which spore clones are His+ and which are His– ; but then the fool loses the papers on which most of the data is recorded. In the end all he can remember is that there were three different tetrad types an that there was only one tetrad of the type with 2 His+ and 2 His– spore clones.
TLS Online TPP Program

#Question id: 4982

#Unit 11. Evolution and Behavior

Bagworm moth caterpillars feed on evergreens and carry a silken case or bag around with them in which they eventually pupate. Adult female bagworm moths are larval in appearance; they lack the wings and other structures of the adult male and instead retain the appearance of a caterpillar even though they are sexually mature and can lay eggs within the bag. This is a good example of
TLS Online TPP Program

#Question id: 11560

#Unit 7. System Physiology – Animal

Which of the following statements are correct?

I) Hormones often regulate homeostasis through antagonistic functions.

II) Hormones of the same chemical class usually have the same function.

III) Hormones are secreted by specialized cells usually located in exocrine glands.

IV) Hormones are often regulated through feedback loops.
TLS Online TPP Program

#Question id: 17082

#Unit 12. Applied Biology

What is an Aminopterin
TLS Online TPP Program

#Question id: 7232

#Unit 5. Developmental Biology

During early development in sea urchin following events occur.

A. localized maternal factors in egg

B. organizer specified in vegetal region (micromeres)

C. induction of endomesoderm

D. b-catenin accumulation

E. animal–vegetal axis

which of the following sequence of developmental event is correct?