Determination of Sex + Variation Flashcards
1
Q
What pair chromosome does sex depend on
A
pair number 23
2
Q
What is definition for female using chromosome 23
A
Possession of only x chromosome signifies person is female
3
Q
What is the definition for male using chromosome 23
A
Possession of X and Y chromosomes signifies person is male
4
Q
What is variation defined
A
Differences in characteristics of individuals within a population
5
Q
What two things can cause variation
A
inherited alleles (genetic causes)
Environmental causes
6
Q
What can genetic variation sometimes be caused bu
A
Random mutation
7
Q
What usually happens with mutation
A
most have no effect on phenotype
8
Q
What happens if a mutation causes a new phenotype that is suited to the environment the individual is in
A
relatively rapid change in the species
