1) Single cells are taken from a person and reprogrammed to create a totipotent

Question

1) Single cells are taken from a person and reprogrammed to create a totipotent stem cell in:

a) transgnic pharming   b) therapeutic cloning c) human cloning   d) transgenic cloning   e) gene therapy

2) Mark all the true statements regarding gamete formation ( mark all that apply)

a) in females, most of the cytoplasm and organelles concentrate in one huge cell during oogenesis

b) in males, meiosis produces for genetically unique sperm cells

c) meiosis is completed prior to birth in oocytes

d) in males, spermatogenesis occrs throughout life once sexual maturity is reached

e) oocytes complete meiosis at different stages during life and is only completed in fertilized by a sperm cell

3) In AIDS, HIV attacks and killers helper-T cells, leading to a decrease in B cell acitivity. Aids could thus be coonsidered a ______ of ADA efficiency

a) gene linked to   b) side effect   c) heteroplasmy    d) phenocopy    e) homologue

Explanation / Answer

1) e) gene therapy

2) a) in females, most of the cytoplasm and organelles concentrate in one huge cell during oogenesis

b) in males, meiosis produces four genetically unique sperm cells

d) in males, spermatogenesis occurs throughout life once sexual maturity is reached

e) oocytes carry meiosis at different stages during life and is only completed if fertilized by a sperm cell

3) d) phenocopy

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