B1.15 Human Characteristics Flashcards
1
Q
What does dominant mean?
A
Describes a characterstic that is expressed even if only one allele for it is present
2
Q
What does recessive mean?
A
Describes a characteristic that is only expressed when two alleles for it is present
3
Q
What two chromosomes identify females?
A
X X
4
Q
What two chromosomes identify males?
A
X y
5
Q
What is genotype?
A
The genetic makeup of an individual
6
Q
What is phenotype?
A
The observable characteristica of an organisms
7
Q
What is heterozygous?
A
Describes an individual with both alleles different gene/ characterstic
8
Q
What is homozygous?
A
Desrcibes an individual with both alleles the sams particular gene/ characteristic
9
Q
What sort of letter to represent a dominant allele?
A
Upper case
10
Q
What sort of letter to represent a recessive allele?
A
Lower case
