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Worksheets

Genes Mendel

Total questions: 20

Worksheet time: 54mins

Name
Class
Date
1.

Which of the following is heterozygous?

a)

MM

b)

Mm

c)

mm

2.

Which of the following is homozygous dominant?

a)

RR

b)

Rr

c)

rr

3.

Which of the following is homozygous recessive?

a)

QQ

b)

Qq

c)

qq

4.

What term denotes the physical expression of a gene?

a)

genotype

b)

phenotype

c)

appearance

d)

homologous

5.

Which of these genotypes would most likely be used to represent the dominant for pea plant height?

a)

TT

b)

tt

c)

PP

d)

pp

6.

Which of the following would produce a recessive phenotype?

a)

hh

b)

Rr

c)

Ww

d)

BB

7.

Which of the these is homozygous?

a)

gg

b)

Yy

c)

Nn

d)

Ee

8.

What organism did Mendel study?

a)

pea plants

b)

onions

c)

mice

d)

cats

9.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
10.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
11.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
12.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
13.
___________________________ is the field of science that studies of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
14.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant
15.
What is a gene?
a)
An entire chromosome that  codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
Chemical messengers in your brain that code for a trait
16.

Which of the following is a genetic trait?

a)

time

b)

temperature

c)

eye color

d)

diet

17.

If brown hair is represented by the allele "B" and blond hair is represented by the allele "b" then what must be the genotype of someone who has blond hair?

a)

BB

b)

bb

c)

Bb

d)

either BB or Bb

18.

What type of organism was used to determine the basic patterns of heredity?

a)

fruit flies

b)

dogs

c)

potato plants

d)

pea plants

19.

What is a phenotype?

a)

the alleles in an organism

b)

the genetic code

c)

a fake gene

d)

the physical traits expressed

20.

If black fur is dominant and white fur is recessive, what are the possible offspring of two black mice bred together?

a)

all black

b)

all white

c)

half white and half black

d)

any of the above are possible, depending on the parents' genotypes

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