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TLS Online TPP Program

#Question id: 2946

Which of the following occurs during anaphase A?

#Unit 2. Cellular Organization

  1. The spindle elongates.

  2. Kinetochores remain attached to shortening kinetochore microtubules.

  3. Chromosomes move to the spindle equator.

  4. The spindle poles move closer together.

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TLS Online TPP Program

#Question id: 5582

#Unit 5. Developmental Biology

Secretion of Müllerian-inhibiting substance by Sertoli cells:
TLS Online TPP Program

#Question id: 5583

#Unit 5. Developmental Biology

In mammals, dosage compensation is carried out by:
TLS Online TPP Program

#Question id: 5584

#Unit 5. Developmental Biology

Which one of the following provides rapid block to polyspermy during sea urchin fertilization?
TLS Online TPP Program

#Question id: 5585

#Unit 5. Developmental Biology

Hermaphrodite is the sexual phenotype of a gain-of-function transformer-1 in both X and XX of C. elegans. Which of the following loss-of-function will also result in hermaphrodite regardless of copy number of X?
TLS Online TPP Program

#Question id: 5586

#Unit 5. Developmental Biology

Plants exhibit an astounding capacity for perpetual growth throughout their life span, a phenomenon known as
TLS Online TPP Program

#Question id: 5587

#Unit 5. Developmental Biology

Which gene on the Y chromosome transforms the bipotential gonad into a testis in mammals?