Practice Questions

TLS Online TPP Program

#Question id: 7267

Endocrine disruptors can interfere with hormone function in many ways like, They can act as antagonists and inhibit the binding of a hormone to its receptor or block the synthesis of a hormone. which of the following example best explains the antagonistic effect of endocrine disruptors?

#Unit 5. Developmental Biology

The endocrine disruptor diethylstilbestrol (DES), which binds to the estrogen receptor and mimics estradiol, a hormone that is very active in building the tissues of the female reproductive tract.
DDE, a metabolic product of the insecticide DDT, can act as an anti-testosterone, binding to the androgen receptor and preventing normal testosterone from functioning properly.
The herbicide atrazine, elevates the synthesis of estrogen and can convert testes into ovaries in frogs.
Polychlorinated biphenyls (PCBs) disrupt the endocrine system is by interfering with the elimination and degradation of thyroid hormones.

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TLS Online TPP Program

#Question id: 28357

#Unit 5. Developmental Biology

what is the function of the gene tudor (tud) & oskar (osk) and if it is mutated that leads to____

TLS Online TPP Program

#Question id: 28358

#Unit 5. Developmental Biology

Which of the following protein is responsible for the localization of nanos mRNA at the posterior end and also involved in germ cell determination?

TLS Online TPP Program

#Question id: 28359

#Unit 5. Developmental Biology

if the Vasa is mutant that gives the mutant phenotype except_____

TLS Online TPP Program

#Question id: 28360

#Unit 5. Developmental Biology

Which of the following proteins function as localization of nanos mRNA?

b) tudor & oskar

c) Acron & telson

d) exuperantia & swallow

TLS Online TPP Program

#Question id: 28361

#Unit 5. Developmental Biology

Which of the following protein is involve to the stabilization of Nanos localization complex ?

TLS Online TPP Program

#Question id: 28362

#Unit 5. Developmental Biology

if the Valois is mutant that gives the mutant phenotype except_____