Life on Earth - Mutation and Alleles Flashcards
1
Q
What is a mutation?
A
a random change to genetic material.
2
Q
Describe structural AND behavioral adaptations
A
- structural - The physical features of an organism.
- behavioural - The things organisms do to survive.
3
Q
What is variation?
A
The difference that exists between individuals.
4
Q
What is an allele?
A
Different forms of a gene that produce different phenotypes
5
Q
What is mutagenic agent? Give examples.
A
- factors that can increase the rate of mutation
- Radiation (e.g. x-rays, UV light), some chemicals (mustard gas, bromine)
6
Q
What does variation within a population allow?
A
Allows that population to evolve over time in response to changing environmental conditions
7
Q
What is an adaptation?
A
An inherited characteristic that makes an organism suited to survival in its environment/niche. They can be structural or behavioural
