Free Printable Genetics (basics)

1.

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

a)

100% BB

b)

75% BB and 25%Bb

c)

50 % BB and 50% Bb

d)

50% Bb and 50% bb

2.

The man who studied genetics and came up with genetics is (father of genetics)

a)

Watson

b)

Crick

c)

Mendel

d)

Darwin

3.

What law states that in Tt the person will only show the dominant allele

a)

law of segregation

b)

law of independent assortment

c)

law of dominance

d)

law of punnett squares

4.

Genotype refers to the ...

a)

physical expression of the genes

b)

the possible combination of alleles in a gene

c)

whether an allele is dominant or recessive

d)

how an organism will appear

5.

An offspring will receive how many alleles from each parent to determine a specific trait?

a)

one

b)

two

c)

three

d)

five

6.

What is a phenotype

a)

The genetic make up (code)

b)

The physical trait

7.

the passing of genetic traits from parent to offspring.

a)

heredity

b)

trait

c)

gene

d)

allele

8.

having two of the same genes for the trait (sometimes called purebred).

a)

homozygous

b)

hetrozygous

c)

protein

d)

chromosome

9.

having two different genes for a trait (sometimes called hybrid).

a)

protein

b)

homozygous

c)

heterozygous

d)

genotype

10.

G = green, g = yellow
The genotype for a yellow plant is...

a)

GG

b)

Gg

c)

gg

d)

all of the choices result in yellow

11.

What tool is used to identify possible offpsring genotypes

a)

phenotypes

b)

punnett square

c)

genotypes

d)

probability

12.

segment of dna that codes for a trait/protein

a)

phenotypes

b)

gene

c)

genotypes

d)

alleles

13.

allele combination (BB, Bb, bb)

a)

phenotypes

b)

gene

c)

genotypes

d)

alleles

14.

alternate forms of genes

a)

phenotypes

b)

gene

c)

genotypes

d)

alleles

15.

same alleles inherited

a)

phenotypes

b)

homozygous

c)

genotypes

d)

heterozygous

16.

different alleles inherited

a)

phenotypes

b)

homozygous

c)

genotypes

d)

heterozygous

17.

dominant allele masks over or covers up the recessive allele

a)

principle of segregation

b)

principle of independent assortment

c)

principle of dominance

18.

If a pea plant is either green or yellow (recessive) what are the possible genotypes of being green

a)

GG

b)

GG and Gg

c)

gg

19.

Pea plants are either green or yellow (recessive). A heterozygous green is crossed with heterozygous green what are their offsping genotype possibilities

a)

GG 25%, Gg 75%

b)

GG 25%, Gg 50%, gg 25%

c)

gg 100%

d)

Gg 50% and gg 50%

20.

Pea plants are either green or yellow (recessive). A heterozygous green is crossed with heterozygous green what are their offspring phenotype possibilities

a)

Green 75% and 25% yellow

b)

Green 5o% and 55% yellow

c)

Green 25% and 75% yellow

d)

Green 100% and 0% yellow

21.

Incomplete dominance result in a

a)

heterozygous genotype with both alleles expressed

b)

one is allele is expressed over the other allele

c)

a blend of heterozygous genotype

22.

Codominance results in a

a)

heterozygous genotype with both alleles expressed

b)

one is allele is expressed over the other allele

c)

a blend of heterozygous genotype

23.

What will result in the most pink flowers (RW = pink)

a)

RR X WW

b)

RW X RW

c)

WW X RW

d)

RR X RW

24.

If a heterozygous pink flower is crossed with a heterozygous pink flower (alleles are R = Red and W = white) what is the phenotype possibilities for their offspring?

a)

25% Pink, 50% Red, 25% White

b)

25% Red, 50% Pink, 25% White

c)

50% Pink, 50% White

d)

50% Red and 50% Pink

25.

"co" means

a)

together

b)

against

c)

same

d)

different

26.

Which blood type represents Codominance

a)

A

b)

B

c)

AB

d)

O

27.

to have a blood type O child what parent combination would allow that

a)

heterozygous A and Homozygous B

b)

Homozygous B and Homozygous A

c)

Heterozygous A and Heterozygous B

d)

AB and AB

28.

Blood Type A

a)

$I^AI^A\ or\ I^Ai\$

b)

$I^BI^B\ or\ I^Bi\$

c)

ii

d)

$I^AI^B$

29.

Blood Type AB

a)

$I^AI^A\ or\ I^Ai\$

b)

$I^BI^B\ or\ I^Bi\$

c)

ii

d)

$I^AI^B$

30.

Blood Type O

a)

$I^AI^A\ or\ I^Ai\$

b)

$I^BI^B\ or\ I^Bi\$

c)

ii

d)

$I^AI^B$

31.

RW

a)

Complete

b)

Incomplete

c)

Codominance

32.

Rr

a)

Complete

b)

Incomplete

c)

Codominance

33.

$F^RF^W$

a)

Complete

b)

Incomplete

c)

Codominance

34.

allele covers up other allele

a)

Complete

b)

Incomplete

c)

Codominance

35.

blending

a)

Complete

b)

Incomplete

c)

Codominance

36.

expressed together

a)

Complete

b)

Incomplete

c)

Codominance

37.

A genotype is made of how many alleles?

a)

1

b)

2

c)

3

d)

4

38.

When creating a punnett square what do you put above each column and row.

a)

1 allele

b)

2 alleles

c)

genotypes

d)

phenotype

39.

Keys:

Trait: Height of Plant Trait: Flower Color Trait: Leaf Complexion

T = tall R= Red

t=short r = white

Which option shows Heterozygous for height and for flower color, what is the phenotype?

a)

Short, white

b)

Tall, red

c)

Tall, pink

d)

Tall, white

Genetics (basics)

Total questions: 39

Worksheet time: 39mins

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