Patterns of Inheritance

Question 1

Which of the following can be used to carry a fragment of DNA into a host organism cell?

Answer 1

Vector

Question 2

Which of the following describes an autosome?

Answer 2

Not a sex chromosome

Question 3

A phenotype is best described as being determined by which of the following?

Answer 3

Both the genotype and the environmental conditions

Question 4

Test Cross

Answer 4

predicting the offspring of a cross between known homozygous or heterozygous parents

Question 5

Which of the following correctly describes a carrier?

Answer 5

A carrier is always heterozygous for the trait.

Question 6

Phenotype

Answer 6

individual’s expressed traits

Question 7

Alleles

Question 8

Characters

Answer 8

heritable features

Question 9

True-breeding

Answer 9

always produced offspring that were identical to the parent

Question 10

Mendel’s Law of Segregation

Answer 10

• one allele for each gene

Question 11

Mendel’s law of independent assortment

Answer 11

genes do not influence each other

Question 12

Incomplete Dominance

Answer 12

Blended traits - white + red flowers = pink

Question 13

Codominance

Answer 13

Both alleles appear - red + white flowers = red flowers white spots

Question 14

Sex-linked traits

Answer 14

• gene present on X but not Y
• female homozygous for a recessive X-linked trait will pass the trait on to 100 percent of the male offspring
• Females heterozygous for these diseases are said to be carriers , not showing phenotype

Question 15

Mendelian Ratios

Answer 15

1:1

3:1

1:2:1

1:1:1:1

9:3:3:1

Question 16

Pedigree

Answer 16

family tree that traces the occurrence of the character