biol+4+inheritance+SAC+solutions

This is where you all contribute to a set of solutions for the inheritance SAC. Everyone should be able to contribute an answer to at least part of one of the 7 questions. If a drawing is part of the answer then do you drawing in powerpoint or paint, save it as a jpg or png or gif file and upload it. Back to biol 4 SACs page.

Question 1 (2+4+2 marks) a)
 * Section A**

b)

c)

Question 2 (2+1+2+1 marks) a)

b)

c)

d)

Question 3 (3+2+1+1+2 marks) a)
 * Section B**

b)

c) The pigment production is part of a pathway, magenta pigment must be present for the blue pigment to be produced, so the plant with m+/m+ will be white unless the w+ allele is present.

d)

e)

Question 4 (1+2+1+2 marks) a)
 * Section C**

b)

c)

d)

Question 5 (2+2+2 marks) a)

b) If vestigial wings are X-linked recessive all male offspring in Gen-II would be affected as they would all receive the vestigial wing allele from the mother and the Y chromosome from the father, thus making all male offspring affected.

c)

Question 6 (2+2+1+2+3 marks) a)

b)

c)

d)

e)

Question 7 (1+2+2 marks) a)

b)

c)