TOPIC 4: INHERITANCE Flashcards
1
Q
Where is the site of DNA in plants and animals?
A
nucleus
2
Q
What is a gene?
A
small section of DNA that codes for a particular characteristic
3
Q
What is an allele?
A
a version of a gene
4
Q
Characteristic of a dominant allele
A
it will always be expressed (BB or Bb)
5
Q
Characteristic of a recessive allele
A
it will never be expressed in the presence of a dominant allele HOWEVER it is always expressed when homozygous (bb – always but Bb – never)
6
Q
Homozygous vs Heterozygous
A
homozygous: same allele
heterozygous: different allele
7
Q
Phenotype vs Genotype
A
phenotype: physical characteristic
genotype: refers the DNA sequence