2.4 Variation and Inheritance Flashcards
1
Q
What is a species?
A
A group of organisms so genetically similar that they can interbreed to produce fertile offspring
2
Q
What are the two types of variation?
A
Discrete and continuous
3
Q
What is continuous variation?
A
- A wide range of values between a maximum and a minimum (e.g. height)
- Controlled by multiple genes
- Polygenic inheritance
- Shown using a histogram
4
Q
What is discrete variation?
A
- Falls into two or more distinct groups (e.g. rolling your tongue)
- Controlled by one gene
- Monogenic inheritance
- Shown using a bar graph
5
Q
What is a gene?
A
A section of DNA that codes for a protein
6
Q
What is an allele?
A
The different forms of a gene
7
Q
A
