Flashcards
Biology B1.2 B - Male or Female?
Flashcards do conjunto (12)
- 1What is pair 23?Sex chromosomes.
- 2What are the differences in pair 23 for male and females?Males have XY
Females have XX - 3Which chromosome does each gamete carry?Sperm carry a Y chromosome.
Eggs carry an X chromosome. - 4What is the chance of having a boy?50%
- 5When does the male embryo's testes start to develop?@ 6 weeks
- 6What causes the growth of the male testes?the SRY gene.
- 7what do testes produce?Male sex hormones called androgens.
- 8What do androgens cause?They cause the embryo to develop male characteristics.
- 9What happens if no male sex hormone is present?The embryo develops female characteristics ( ovaries, clitoris, and vagina)
- 10What are hormones?A group of proteins that control many processes in cells.
- 11How do hormones reach their target cells?Through the blood stream.
- 12What happened if a person produces androgen but their cells don't respond?They have androgen insensitivity syndrome, meaning they appear female but have small internal testes and short vagina.
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- Descrição
- GCSE Biology (B1 - You & your genes) FlashCards sobre Biology B1.2 B - Male or Female?, criado por lily bevan em 01-12-2017.
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- lily bevan
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