Variation Flashcards
1
Q
Where are chromosomes found?
A
in the nucleus of cells
2
Q
What do chromosomes carry?
A
genes
3
Q
How many pairs of chromosomes do humans have?
A
23 pairs
4
Q
Where do the pairs come from?
A
one set from female gamete, other set from male gamete
5
Q
How many sets of genes do sex cells have?
A
ONE
6
Q
How are different in characteristics of individuals caused?
A
- genes inherited
- environmental causes
- both
7
Q
How is genetic variation caused?
A
combining of genes
8
Q
characteristics determined by genes
A
- eye colour
- blood group
- inherited disorders
9
Q
examples of characteristics determined by environment
A
- hair colour
- accent
- body mass
- height
- green leaves on a plant in sunny conditions
- yellow leaves on a plant in darkness
10
Q
examples of characteristics caused by both
A
- body weight/height
- skin colour
- sportiness
- academic
