b2 genetic inheritance

?
  • Created by: Avaaa
  • Created on: 20-03-17 20:41
what is the idea of inherited factors
o Each individual inherits a set of factors from each of their parents. o It is the combination of these characters that determines the characteristics of an individual.
1 of 11
why werent mendels discorveries noticed until after his deat
• He published his work in an obscure journal • DNA, chromosomes and genes were not yet discovered • People could not accept the link between plants and humans.
2 of 11
how does sexual reproduction give rise to variation
V) Sexual reproduction gives rise to variation because, when gametes fuse, one of each pair of alleles comes from each parent which mean variation happens and you get a combination of aleles as a result.
3 of 11
what carries the gene that determines sex
In human body cells, one of the 23 pairs of chromosomes carries the genes that determine sex
4 of 11
in females the sex chromosomes are
**
5 of 11
and in males
XY
6 of 11
what can characteristics be controlled by
) Some characteristics are controlled by a single gene. Each gene may have different forms called alleles.
7 of 11
dominant allele is
An allele that controls the development of a characteristic when it is present on only one of the chromosomes is a dominant allele.
8 of 11
and recessive
An allele that controls the development of characteristics only if the dominant allele is not present is a recessive allele.
9 of 11
each gene
codes for a particular combination of amino acids which make a specific protein.
10 of 11
DNA IS USEFUL BECAUSE
) Each person (apart from identical twins) has unique DNA. This can be used to identify individuals in a process known as DNA fingerprinting.
11 of 11

Other cards in this set

Card 2

Front

why werent mendels discorveries noticed until after his deat

Back

• He published his work in an obscure journal • DNA, chromosomes and genes were not yet discovered • People could not accept the link between plants and humans.

Card 3

Front

how does sexual reproduction give rise to variation

Back

Preview of the front of card 3

Card 4

Front

what carries the gene that determines sex

Back

Preview of the front of card 4

Card 5

Front

in females the sex chromosomes are

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all DNA and inheritance resources »