Chapter 9

Chapter 9

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Mendel Terms Monohybrid crosses

Dihybrid crosses

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400

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500 500 500 500

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300300

400400

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Non-mendelian

traits

Misc

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Row 1, Col 1

What is dominant?

The presence of this type of allele

Will mask the presence of another

Type.

1,2

The chemical factors that determine traits

What are genes?

1,3

What is all tall?

What is the phenotype of the offspring?

T t

T

T TT

TT

Tt

Tt

1,4

What is bbRR?

X

BR Br bR br

BR

Br

bR

br

Genotype in square X

1,5

What is polygenic traits?

Variation in human skin color is a result of

1,6

What is 100%?

If two snapdragons show incomplete dominance for flower color and a gardener crosses a red flower with a white flower, what percentage of the offspring would

be pink?

2,1

When Gregor Mendel crossed true-breeding

tall plants with true breeding short plants,

all of the offspring were tall Because ____.

What the allele for tall is dominant?

2,2

Organisms that have two identical alleles are ___

What is homozygous?

2,3

What is TT and Tt?

T t

T

T TT

TT

Tt

Tt

The genotype(s) of the offspring

2,4

What is White, rough hair?

X

BR Br bR br

BR

Br

bR

br

The phenotype of the offspring in square X

2,5

A situation in which one alleleFor a gene is not completely

Dominant over another alleleFor that gene.

What is incomplete dominance?

2,6

What is 40?

A body cell of a pigeon has 80 chromosomes. If a pigeon lays an

unfertilized egg, how many chromosomes will the egg have?

3,1

Who concluded that traits areInherited by the passing of

Factors from one generation to the next?

Who is Gregor Mendel?

3,2

How you get a hybrid

What is cross two true-breeding plants with different traits?

3,3

When two heterozygous tall pea plants are crossed,

The expected genotype ratio of the Offspring is

What is 1:2:1?

3,4

What is 1/16?

X

BR Br bR br

BR

Br

bR

br

The fraction of the offspring that will have white, smooth hair

3,5

A cross of a red cow (RR)With a white bull (WW)

Produces all roan offspring (RW)This type of inheritance is called

What is codominance??

3,6

What is dominant?

A plant breeder crossed two red roses, 78% of the offspring had red flowers and 22% had white

flowers. The allele for red flowers is most likely ___

4,1

Gregor Mendel used pea plants to study ____

What is inheritance of traits?

4,2

A cross between a chicken with spotted feathers and a

chicken with black feathers produced only chickens with

feathers that had an intermediate, blue-gray color.

What is this pattern of inheritance?

What is incomplete dominance?

4,3

What is 50%

y y

Y

y

What percent of the offspring will have yellow seeds if Y is yellow?

4,4

What is the phenotype ratio when you perform the

following dihybrid crossRrYy x RrYy

Where R: round; r: wrinkledY:Yellow; y: green

What is 9:3:3:1?

4,5

The color of the offspring’s Flowers if you perform a Test cross between a pink

Snapdragon and a white one.

What is 50% white and 50% pink?

4,6

What is 25%?

Both members of a couple are carriers of cystic fibrosis, a

recessive disease. What is the chance that they will have a child

with cystic fibrosis?

5,1

When Mendel crossed a tall Plant with a short plant, what

Alleles did the offspring inherit from each parent

What is T from tall parent and t from short parent?

5,2

The principle that states that during gamete formation genes for

Different traits separate withoutInfluencing each other’s

Inheritance.

What is the principle of independent assortment?

5,3

A biologist observed several Different colors of fur in a Population of wild rabbits.

This process contributes to the Variation of fur color

What is meiosis or sexual reproduction?

5,4

If pea plants that are homozygousFor round, yellow seeds (RRYY)

Were crossed with pea plants thatAre heterozygous (RrYy) what

Are the expected phenotypesOf the offspring?

What is all are round, yellow?

5,5

If red and white flowers areCrossed to make pink, what is the

Genotype of the pink flowers?

What is RW?

5,6

What is N?

The number of chromosomes in a gamete is represented by this

symbol.