2.3 Flashcards
1
Q
simple animal cell consists of:
A
nucleus
cell membrane
cytoplasm
2
Q
the differences in the characteristics of individuals (variation) may be due to what?
A
genetic or environmental causes or both
3
Q
what is it genes have that produce different characteristics
A
different forms called alleles
4
Q
genetically inherited disorders
A
sickle-cell anaemia
cystic fibrosis
haemophilia
polydactyl
5
Q
what does the nucleus of a cell contain?
A
chromosomes
6
Q
what do chromosomes carry?
A
genes which control the characteristics of the body
7
Q
each chromosome carries a larger number of what
A
genes
8
Q
what do genes have?
A
different forms called alleles which produce different characteristics
