gene

Question 1

Complete dominance

Answer 1

Only 1 allele in the genotype is seen in the phenotype

Question 2

Incomplete dominance

Answer 2

Both alleles in the genotype are seen in the phenotype

Question 3

Codominance

Answer 3

A mixture of the alleles in the genotype is seen in the phenotype

Question 4

Gene with more than 2 alleles

Answer 4

blood types

Question 5

Pleiotropy

Answer 5

Some genes affect many different characteristics, not just a single characteristic (dominant white gene and piebald spotting gene cause blue eye color and hearing loss)

Question 6

Epistasis

Answer 6

The alleles of one gene may mask or conceal the alleles of another gene (coat color - one gene is pigment, second gene is whether pigment is deposited)

Question 7

Polygenic inheritance

Answer 7

addictive effect of two or more genes on single phenotype. Some characteristics are polygenic, meaning that they’re controlled by a number of different genes. (eye color)

Question 8

Multifactorial traits

Answer 8

traits depend on multiple genes combined with environmental influences (color of flower depend on pH)

Question 9

Many genetic disorders are recessive, carries have recessive allele but normal phenotype

Answer 9

cystic fibrosis

Question 10

Dominant disorders are rare

Answer 10

arise by mutation

Question 11

Phenotypes can be determined by complete dominance, __ dominance(intermediate flower color) or __ (blood types with more than two alleles)

Answer 11

Phenotypes can be determined by complete dominance, incomplete dominance(intermediate flower color) or co-dominance(blood types with more than two alleles)

Question 12

__ is when a gene at one locus alters phenotypic expression of gene at second locus (coat color)

Answer 12

Epistasis is when a gene at one locus alters phenotypic expression of gene at second locus (coat color)

Question 13

__ inheritance is the addictive effect of two or more genes on single phenotype

Answer 13

Polygenic inheritance is the addictive effect of two or more genes on single phenotype

Question 14

Multifactorial trait depend on multiple genes combined with __ (hydrangeas)

Answer 14

Multifactorial trait depend on multiple genes combined with environmental influences (hydrangeas)

Question 15

__ disorders are rare, and __ are likely to show late onset symptoms (Huntington)

Answer 15

Dominant genetic disorders are rare, and lethal disorders are likely to show late onset symptoms (Huntington)