Inheritance, and The HGP Flashcards
1
Q
What is meant by allele?
A
Different forms of a gene.
2
Q
What is meant by dominant?
A
Only one out of 2 needs to be expressed.
3
Q
What is meant by recessive?
A
Both have to be expressed.
4
Q
What is meant by homozygous?
A
Both inherited alleles are the same.
5
Q
What is meant by heterozygous?
A
1 of inherited is dominant, and other is recessive.
6
Q
What is meant by genotype?
A
Combination of alleles.
7
Q
What is phenotype?
A
Physical characteristics that are observed.
8
Q
What is codominance?
A
Some alleles are both expressed in the same phenotype.
9
Q
What is an example of codominance?
A
ABO blood group, alleles of A, B and O can be expressed at same locus.
10
Q
a and o?
A
A
11
Q
A and B
A
AB
12
Q
a and a
A
a
13
Q
b and b
A
b
14
Q
o and o
A
o
15
Q
why is o rare?
A
As it requires both alleles to be dominant.
