Pattern Of Inheritance

Question 1

What is law of segregation?

Answer 1

All ograisms that make gametes will have one gene copy

Question 2

What is a Phenotype?

Answer 2

The physical characteristics of a trait

Question 3

What is a genotype?

Answer 3

The alleles of a given gene

Ex. Aa, AA, aa

Question 4

What is mendels ratio for Phenotype if both are hertozygous in both parents?

Answer 4

3:1

Question 5

What is a test cross

Answer 5

A cross between a recessive parent and a unknown genotype parent

Question 6

What’s a monohybird cross?

Answer 6

A cross between a single trait of inheritance

Question 7

What is a dihybrid cross?

Answer 7

A cross between two bursts of inheritance

Question 8

What is mendelians phenotype ratio for Dihybird crosses if both parents are hertozygous for two traits?

Answer 8

9:3:3:1

Question 9

What is a X-linked trait?

Answer 9

Genes/traits found on the x chromeosome

Question 10

In X-linked traits, can males and females be carriers?

Answer 10

No. Only female becuase males have one x chromosome that decides their faith

Question 11

What is true breeding?

Answer 11

Homozygous genotype

Question 12

What is incomplete Dominance?

Answer 12

A pattern of inheritance where Phenotype is show in a blend

Question 13

What is Codominance?

Answer 13

A inheritance pattern where both alleles are completely expressed in hetrozygous

Ex. Cross between white and brown cow I result in the cow being both white and brown

Question 14

What are the possible genotypes for blood type a.

Answer 14

IAIA or IAi

Question 15

What possible genotypes are there for blood type B

Answer 15

IBIB or IBi

Question 16

What possible genotypes are there for blood type O

Answer 16

ii

Question 17

What possible genotypes are there for blood type AB?

Answer 17

IAIB

Question 18

What is AB blood

Answer 18

The universal recipient

Question 19

What is type O blood?

Answer 19

The universal donor

Question 20

What are polymeric traits?

Answer 20

A range/variety of phenotypes influenced by multiple alleles

Question 21

What is a pedigree?

Answer 21

A visual ogran that shows patterns of inheritance of traits in a family of several generations

Question 22

How are pedigree useful?

Answer 22

Can help determine the probability that a genetic disorder is passed down

Question 23

How do yoy know if a pedigree has a dominant pattern?

Answer 23

• every generation has an affected person
• all affted offspring have an affted parent
• two aeffted parents have unaffected offspring

Question 24

How do you know if a pedigree has a resscive pattern?

Answer 24

• all affected offspring have two unaffected parents
• the trait skips a generation, or doesn’t appear in every generation

Question 25

How do you know if a pedigree is Autosomal or X-linked?

Answer 25

Autosomal - a female is affted but her sons and father aren't - there are equal number of male and females affected X-linked - a female is affected and all of her sons and her father is affected - most males males are affected