Question

 

QUESTION 1

1. In a cross of AABB x aabb, how frequent are the individuals displaying the recessive trait for both genes in the F1 offspring?

   		0
   		1/16
   		3/16
   		9/16
   		100%

QUESTION 2

1. If the amino acid sequence of the polypeptide chain below is written in the direction of its translation from the mRNA (from left to right), which amino acid has an exposed amino group?
   Met Phe Leu Ser Tyr Cys Pro His Gln Arg Ile Thr

   		Met
   		Thr
   		Phe at the second position
   		Both (a) and (b)
   		None of the above.

QUESTION 3

1. In order for a human (or another mammal) to grow to its normal size, the igf gene encoding the insulin-like growth factor

   		has to be imprinted in exactly the same way in both the sperm and the ovum.
   		has to be imprinted in different ways (has to carry different epigenetic marks) in the sperm and in the ovum.
   		cannot be imprinted (cannot have any epigenetic mark whatsoever) in the gametes by either the male or the female parent.
   		has to be deleted in the sperm, but not in the ovum.
   		None of the above.

QUESTION 4

1. Lac operon transcription is _____________when the operator sequence is eliminated by a mutation

   		induced by the presence of glucose.
   		repressed
   		constitutive
   		not influenced at all
   		entirely blocked

  

 

Answer 1