Review

What is the gender of the person on the left?

What are pedigrees used to show?

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What is being represented when an individual has a dot in

the middle of their symbol?

What type of inheritance pattern

causes males to show a trait more often than females?

Which parent is responsible for passing an X-link recessive trait

to a son?

If a male with red-green colorblindness marries a normal vision

female, what are the chances that they have a

child with red-green colorblindness?

Tay Sachs disease is an autosomal recessive trait. A young couple had their first

child affected with Tay Sachs. What is the risk that their future children will be

similarly affected?

What does it mean when a trait is

autosomal dominant?

If you cross two heterozygous parents, what is the genotypic

ratio of their offspring?

If you cross a heterozygous parent with a homozygous recessive parent, what is

percentage of offspring that will show the dominant

trait?

If you cross a homozygous dominant parent with a homozygous recessive

parent, what percentage of their offspring will be

heterozygous?

How many alleles are there in a parent’s

genotype for a 2 trait cross?

How many phenotypes are there for a normal

2 trait cross?

If you cross two dihybrid parents

(AaBb), what is the phenotypic ratio of

their offspring?

If you cross a heterozygous parent

(AaBb) with a homozygous recessive

parent, what is the phonotypic ratio of their

offspring?

If RR stands for red flower color, and WW for white, what is the

genotype of a pink flower?

A chicken can be black, white, or spotted. Is this an incomplete dominance trait?

Give a definition for co-dominance.

A horse can be Brown, white, and tan. How

would you change this example to make horse

color a co-dominant trait?

Why is blood type an example of co-

dominance?

What is the least amount of alleles that

a trait needs to be considered multiple

allele?

What are the possible genotypes for a person with

type B blood?

Can parents with type A and type B blood

have a child with type O blood?

Can parents with type AB and B blood have a

child with A blood?

How many blood phenotypes are

there?

A male with blood type O marries a female with blood

type A (AO). They want to have 8 babies. How many of their children are expected

to be blood type A?

How many different gametes can the

following parent make?AABb

What is the genotype of the mother shown

below?dd

Using “R”, what are two homozygous

genotypes a person can have?

If a father is homozygous dominant for a trait, but his child is homozygous

recessive for a trait, what must the mother be?

END