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Genetics

Total questions: 25

Worksheet time: 1hrs 19mins

Name
Class
Date
1.

What is a phenotype?

a)

The expression of a trait; what you see.

b)

refers to the genetic makeup of an individual

c)

An organism that has the same genes for a trait (ex. TT or tt)

d)

the passing of traits from parent to offspring

2.

What does heterozygous mean?

a)

An organism that has the same genes for a trait (TT or tt)

b)

An organism that has different genes for a trait (Tt)

c)

When neither gene is fully dominant; offspring is a mixture of both

d)

the stronger trait

3.

what is two of the same genes?

a)

heterozygous

b)

recessive

c)

homozygous

d)

dominant

4.

what is the physical look of a trait

a)

phenotype

b)

genotype

c)

recessive

d)

trait

5.

dd (lowercase) letters are examples of ....

a)

Heterozygous rescessive

b)

homozygous recessive

6.

Dd letters are an example of....

a)

heterozygous genes

b)

homozygous genes

7.

DD letters is the example of

a)

homozygous recessive

b)

Homozygous dominant

8.

Who is considered the "father" of modern genetics?

a)

Albert Einstein

b)

Gregor Mendel

c)

Walt Disney

d)

Donald Trump

9.

What type of "square" is used to show parents and offsprings genotypes?

a)

carpenter square

b)

Mendel square

c)

Punnett square

d)

genetic square

10.

what is distinguished characteristics that are inherited?

a)

behavior

b)

trait

c)

strong muscles

d)

IQ

11.

TT,tt,DD,dd,AA,aa are examples of alleles that are?

a)

homozygous

b)

heterozygous

c)

different

d)

homologous

12.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
13.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
14.

Dominant alleles are?

a)

capital

b)

lowercase

c)

both

d)

neither

15.

Recessive alleles are?

a)

capital

b)

lowercase

c)

both

d)

neither

16.

G = dominant green and y = recessive yellow

A fish has a Gy genotype, what will its phenotype be? (Use your punnet square in notes to figure out)

a)

yellow

b)

green

c)

greenish-yellow

d)

red

17.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
18.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
19.
___________________________ is the field of science that studies of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
20.

What is a gene?

a)

An entire chromosome that codes for a trait

b)

a piece of clothing

c)

a segment of DNA on a chromosome that controls a trait

d)

Chemical messengers in your brain that code for a trait

21.
In a punnet square where are the parent alleles written?
a)
Top and inside the boxes
b)
Only on the left and right side of the boxes. 
c)
outside of the boxes (top and left side)
d)
All on the top side of the boxes
22.

What did the Gregor Mendel research?

a)

animals

b)

pea plants

c)

humans

d)

rats

23.

What is the letter combination of Alleles called?

a)

phenotype

b)

trait

c)

genotype

d)

heterozygous

24.

Law of Independent Assortment are traits passed on independently from parent to offspring

a)

True

b)

False

25.

Law of segregation are two alleles attached to one another in the formation of a sex cell.

a)

True

b)

False