Reference no: EM133296901

Question 1. The fact that a few adult nuclei transplanted into an enucleated egg produce normal offspring shows that gene regulation (not gene loss) is responsible for cell differentiation. What does it say about gene regulation that the majority of transplanted adult nuclei do not produce viable embryos?

Question 2. Bicoid protein exists in a gradient in the egg cell. What is the initial asymmetry leading to the gradient? Degradation of the bicoid gene at one end of the egg Transport of bicoid mRNA to one end of the egg Binding of bicoid protein to membrane at one pole of the cell.

Question 3. A homozygous mutant male ?y (bicoid -/-) is no more likely to have inviable embryos than a wild-type male (bicoid +/+) Explain.

Question 4. Explain the signi?cance of having multiple bicoid binding sites in front of the hunchback gene.