X and Y Chromosomes and Sex-Linked Genetic Disorders

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  • Created by: Christie
  • Created on: 14-05-13 15:11
How many matched pairs of chromosomes are there in every human body cell?
22
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How many matched pairs of chromosomes are there in every human body cell? And what are the 23rd pair labelled
22, ** or XY
2 of 10
What % chance is there that a sperm gets an X chromosome?
50
3 of 10
What does it mean if a characteristic is 'sex linked'?
The allele that codes for it is located on a sex chromosome
4 of 10
Which chromosome is bigger and which carries more genes?
His fat **** going into my dripping, wet pppussy
5 of 10
Disorders shown by faulty allesles located on sex chromosomes are called what?
sex-linked genetic disorders
6 of 10
Men only having one allele can means the characteristic of this allele is shown even if it is 'what'?
recessive
7 of 10
Two examples of sex-linked genetic disorders
colour blindness and haemophilia
8 of 10
Why is colour blindness alot less common in women than men?
Women need two copies of the recessive allele whereas men only need one
9 of 10
If a normal female who is a carrier of the faulty colour blind allele and a normal male have a child. What is the % chance that their child will be colour blind?
25% (normal female, normal male, normal female, colour blind male)
10 of 10

Other cards in this set

Card 2

Front

How many matched pairs of chromosomes are there in every human body cell? And what are the 23rd pair labelled

Back

22, ** or XY

Card 3

Front

What % chance is there that a sperm gets an X chromosome?

Back

Preview of the front of card 3

Card 4

Front

What does it mean if a characteristic is 'sex linked'?

Back

Preview of the front of card 4

Card 5

Front

Which chromosome is bigger and which carries more genes?

Back

Preview of the front of card 5
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