At puberty, hormones are produced that are responsible for the development of secondary sexual characteristics. Fig. 3.1 shows the concentrations in the blood of two hormones, F and G, involved in a woman's menstrual cycle. Fig. 3.2 shows the thickness of the same woman's uterus lining over a 4-week period. [Figure 3.1] [Figure 3.2]

1. (a)(i)Name one secondary sexual characteristic in males.[1]
2. (a)(ii)Name the hormone responsible for the development of secondary sexual characteristics in males.[1]
3. (a)(iii)Name the organs that produce this hormone.[1]
4. (b)(i)Name the hormones F and G. F G[2]
5. (b)(ii)State what occurs at time H.[1]
6. (c)The graph shown in Fig. 3.1 does not begin at the same time as the cycle shown in Fig. 3.2. Indicate on Fig. 3.2, with a line labelled J, the stage shown by line H on Fig. 3.1, and explain your reason for choosing this point on the graph.[4]

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