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TLS Online TPP Program

#Question id: 5682

During prevention of polyspermy in sea urchin the shift from ___1___ to __2____is the result of a small influx of Na+ into the egg through newly opened sodium channels. Sperm cannot fuse with egg cell membranes that have a ___3___ resting potential, so the shift means that no more sperm can fuse to the egg.

#Unit 5. Developmental Biology

  1. 1-Negative, 2-positive, 3-positive

  2. 1-Positive, 2-negative, 3-positive

  3. 1-Negative, 2-negative, 3-positive

  4. 1-Positive, 2-positive, 3-negative

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TLS Online TPP Program

#Question id: 15978

#Unit 12. Applied Biology

Embryo culture is applied for___
TLS Online TPP Program

#Question id: 15811

#Unit 5. Developmental Biology

In XX Drosophila, which gene is activated during the first 2 hours after fertilization?
TLS Online TPP Program

#Question id: 23919

#General Aptitude

Which of the following shows bioaccumulation and contaminate food chains?
TLS Online TPP Program

#Question id: 3536

#Unit 8. Inheritance Biology

What is the probability that selfing an F1 plant from Mendel dihybrid cross ( RrYy X RrYy) will produce an offspring with an rrYY genotype?
TLS Online TPP Program

#Question id: 2993

#Unit 2. Cellular Organization

During meiosis, a defect occurs in a cell that results in the failure of spindle microtubules binding at the kinetochores. Which of the following statements describes the most likely result of such a defect?