Unit 2 Flashcards
1
Q
what is polygenic inheritance
A
several genes working together
2
Q
what is continuous variation
A
a range of values
3
Q
what is descrete variation
A
distinct groups
4
Q
3 examples of continuous variation
A
- Foot Length 2. Weight 3. Height
5
Q
3 examples of descrete variation
A
- Blood Group 2. Eye Colour 3. Hair Colour
6
Q
what are genes
A
sections of chromosomes that code for characteristics
7
Q
what are alleles
A
different forms of the same gene
8
Q
what is the genotype
A
forms of a gene present
9
Q
what is the phenotype
A
the appearance of the gene
10
Q
heterozygous
A
the alleles of the gene are different e.g Bb
11
Q
homozygous
A
the alleles of the gene are the same e.g bb
