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Genetics Test Warm Up

Total questions: 15

Worksheet time: 30mins

Name
Class
Date
1.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
2.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
3.
What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
4.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
5.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
6.

Who is considered the "father" of modern genetics?

a)

Einstein

b)

Mendel

c)

Disney

d)

Washington

7.

We have the very distinct breeds of dogs today because of ...

a)

Genetic manipulation

b)

Selective Breeding

c)

CRISPR

d)

Natural Selection

8.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
9.

Round shape (smooth skin) is dominant over wrinkled skin in peas.

Use a Punnett Square to determine the genotypic ratios of the offspring by crossing a homozygous recessive male pea plant with a heterozygous female pea plant.

Use the letters "R" and "r" to represent the alleles.

a)

100% RR

b)

25% RR, 50% Rr, 25% rr

c)

100% rr

d)

50% Rr, 50% rr

10.

Round shape (smooth skin) is dominant over wrinkled skin in peas.

Use a Punnett Square to determine the offspring probabilities by crossing a homozygous recessive male pea plant with a heterozygous female pea plant.

Use the letters "R" and "r" to represent the alleles.

a)

0% round and 100% wrinkled

b)

25% round and 75% wrinkled

c)

50% round and round 50% wrinkled

d)

75% round and 26% wrinkled

11.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous 
12.
The exact genetic makeup of an organism, such as RR, Tt, PP is its?
a)
phenotype
b)
dominance
c)
genotype
d)
trait
13.
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
14.
If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?
a)
tall
b)
short
c)
medium
d)
not enough info
15.
A physical characteristic that can be passed from parent to offspring.
a)
behavior
b)
trait
c)
strong muscles
d)
ability to fly a plane.