Seventy to 90 percent of the genetic material in a gamete made in your body could be inherited from your mother. How could this be?
a. The above statement is incorrect. Fifty percent of the genetic material in your gametes comes from your father.
b. You receive maternal genes through the placenta and through breast milk.
c. The X chromosome is substantially larger than the Y chromosome.
d. Your maternal genes kill off your paternal genes at a greater rate than your paternal genes kill off your maternal genes.
e. You receive many mitochondria, which have their own genome, from your mother, but not from your father.
Ans: e. You receive many mitochondria, which have their own genome, from your mother, but not from your father.
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A bacterial cell that is bio- met- leu+ thr- thi+ is infected by a virus carrying bacterial DNA containing bio+ met+
leu- thr- thi+. If all five genes from the virally transduced DNA are recombined into the recipient cell, what kinds of nutrients will the resulting cell still require from the medium in order to grow? Explain your answer.
What will be an ideal response?Parapodia are characteristic of oligochaetes
____________________ Indicate whether the statement is true or false.
The cloning of Dolly the sheep
A) demonstrated that the nuclei from differentiated mammalian cells can retain their full genetic potential. B) demonstrated that differentiated cells contain only a fraction of their full genetic potential. C) demonstrated, for the first time, that eggs are haploid and body cells are diploid. D) revealed that cloned mammals most resemble the egg donor.
A mutation has occurred in the sequence in the promoter region of a bacterial gene, such that the sequence TTGACA has been lost. What process will be most directly affected by this mutation?
A. splicing B. translation initiation C. transcription initiation D. RNA polymerase II binding