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Genetics: Mendel's Laws

Total questions: 22

Worksheet time: 6hrs 30mins

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.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
9.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
10.
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
11.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
12.
___________________________ is the field of science that studies of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
13.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant
14.
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
15.

Which of the following is a genetic trait?

a)

time

b)

temperature

c)

eye color

d)

diet

16.

What is a phenotype?

a)

the alleles in an organism

b)

the genetic code

c)

a fake gene

d)

the physical traits expressed

17.

Which of the following laws claims that alleles will come together independently of each other in the offspring?

a)

Law of Independent Assortment

b)

Law of Probable Expression

c)

Law of Typical Collection

d)

Law of Assorted Assignment

18.
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
19.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
20.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous 
21.
Y for yellow body is dominant over y for blue body.  What alleles would produce yellow bodies?
a)
YY,yy
b)
Yy,yy
c)
YY only
d)
YY,Yy
22.
A physical characteristic that can be passed from parent to offspring.
a)
behavior
b)
trait
c)
strong muscles
d)
ability to fly a plane.

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