SECTION B
Answer TWO questions.
QUESTION 1
Describe the structure and functions of the endoplasmic reticulum. [20 Marks]
QUESTION 2
One gene has alleles A and a; a second gene has allele B and b, and a third has C and c. List the possible gametes that can be formed from the following genotypes. [20 Marks]
a) Aa
b) BbCc
c) CCaa
d) AAcc
e) AaBbCc
f) aaBBCc
QUESTION 3
Write an essay on variation bearing in mind specifically what it is, types and how environmental factors may cause variation. [20 Marks]
QUESTION 4
A) What happens during prophase of mitosis? [8 Marks]
B) Write and explain the full chemical equation of photosynthesis [12 Marks]
