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Flashcards in Variation And Inheritance Deck (13):
0

Name the two types of variation

Discrete variation
Continuous variation

1

Describe discrete variation

Where a characteristic falls into a distinct group

2

Describe continuous variation

Where there is a continuous range of characteristics

3

Give 2 examples of discrete variation

Blood type
Tongue rolling ability

4

Give two examples of continuous variation

Height
Shoe size

5

Define the term polygenic

When characteristics are controlled by many genes

6

What is an allele?

Alleles are different firms of a gene

7

What is a dominant allele ?

Dominant alleles always show up in the appearance of an organism even if there is only one copy present

8

What is a recessive allele?

This is the rarer characteristic as they only show up in the appearance of an organism if there are 2 copies present

9

What is a phenotype?

The appearance of an organism

10

What is a genotype?

The genes an organism possesses

11

If the two alleles are the same for example:
AA or aa

What is this known as?

Homozygous

12

If the two alleles are different for example:
Aa

What is this known as?

Heterozygous