G7-Variation in Heredity

Question 1

Typical

Answer 1

” being homozygous dominant

Question 2

Atypical

Answer 2

being homozygous recessive

Question 3

Complete dominance

Answer 3

when one allele is expressed in the phenotype, even if there is another allele present

• the dominant allele’s phenotype is expressed even if the genotype is heterozygous

Question 4

ex of Variation in Inheritance

Answer 4

Incomplete Dominance
Codominance

Question 5

Neither mask the other, but instead result in a blended phenotype

Answer 5

Incomplete dominance

-the 2 alleles interact with one another

ex: Snapdragons

Question 6

Both mask the other, so both show up in a mixed phenotype

Answer 6

Codominance

-another example of what can happen when the two alleles interact with one another

Question 7

Human blood type is inherited through both a completely…

Answer 7

dominant and codominant pattern

Question 8

blood types are inherited through 3 possible alleles:

Answer 8

IA, IB and i

-Each of these allele codes for a different enzyme that places different types of sugars on the surface of red blood cells

Question 9

type A

Answer 9

IA IA OR IA i

Question 10

Type B

Answer 10

IB IB or IB i

Question 11

Type AB

Answer 11

IA IB

Question 12

Type o

Answer 12

ii