Inheritance,variation And Evolution Flashcards
1
Q
Chromosomes
A
Structures made of DNA
2
Q
Gene
A
A section of DNA coding for a protein
3
Q
Allele
A
Different versions of the same gene
4
Q
Dominant
A
Only one copy needed for expression (e.g., Bb or BB)
5
Q
Recessive
A
Needs two copies to be expressed (e.g., bb)
6
Q
Mutation
A
A random change in DNA
7
Q
Meiosis
A
Cell division creating gametes (sperm/egg)
8
Q
Natural selection
A
Survival of the fittest
9
Q
Genetic engineering
A
Modifying DNA (e.g., GM crops)
10
Q
Selective breeding
A
Humans choosing desirable traits
