Question

2.6. Normal humans re all homogametic
2.9. Hypersecretion of Thyroxine hormone causes Moedema
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Answer 1

Explanation:

1. In humans, as in all mammals, the normal female has two X chromosomes and the normal male has one X chromosome and one Y chromosome. The female is thus the homogametic sex, as all her gametes normally have one X chromosome.
2. If your body releases too much thyroxine, you will suffer a condition called thyrotoxicosis. This can cause a goiter, which is a swelling of the neck because of an enlarged thyroid gland.