✨Genetics✨

Question 1

What is a genotype?

Answer 1

Combination of alleles (a from each parent)

Question 2

What is a phenotype?

Answer 2

What the genotype translate to (traits)

Question 3

What is an allele?

Answer 3

Alternate forms of genes (1 from mother, 1 from father)

Dominant/recessive

Question 4

What does homozygous mean?

Answer 4

Individuals has two of the same alleles (AA or aa)

Question 5

What does heterozygous mean?

Answer 5

Individual has 1 of each allele (Aa)

Question 6

What is a mono hybrid cross?

Answer 6

Crosses with only one trait, determines genotypic/phenotypic probability in offspring

Question 7

What are the 3 types of mono hybrid crosses?

Answer 7

• simple/complète dominance
• incomplète dominance
• codominance

Question 8

What is incomplete dominance?

Answer 8

The dominant allele doesn't completely mask the recessive phenotype
ex: flower colours 
RR-red
Rr-pink
rr-white 

White x Red = pink

Question 9

What is codominance?

Answer 9

No recessive alleles, both alleles are dominant, so heterozygote has both phenotypes

ex: BB-black
WW- white
BBxWW= black and white (feathers)

Question 10

What happens with multiple alleles?

Answer 10

Multiple alleles used for one trait, often a hierarchy of dominance occurs