additional biology- x and y chromosomes/ genetic diagrams Flashcards
1
Q
what chromosomes do men have
A
XY
2
Q
what chromosomes do women have
A
XX
3
Q
what does CC or cc mean
A
homozygous
4
Q
what does Cc or cC mean
A
hetrozygous
5
Q
what are alleles
A
different versions of the same gene
6
Q
what does C mean
A
dominant
7
Q
what does c mean
A
recessive
8
Q
how do you display a recessive charicterisic
A
cc
9
Q
what is cystic fibrosis caused by
A
recessive allele
10
Q
what is cystic fibrosis
A
the build up of mucas in the lungs which weakens the immune system
11
Q
what is polydactyly caused by
A
a dominant allele
12
Q
what is polydactyly
A
when a baby is born with extra fingers or toes
13
Q
what Is embryo screening
A
to see an embryo and analyse its genes before IVF
14
Q
why are people against embryo screening
A
- people will pick the most “desirable” embryo
- the rejected embryo must be destroyed
- it is expensive
15
Q
why are people for embryo screening
A
- help stop suffering
- embryos are destroyed anyway
- treating disorders costs a lot of money
