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Are you Smarter than a 9th Grader?

Total questions: 20

Worksheet time: 26mins

Name
Class
Date
1.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
2.

A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color). 

What will be the phenotype of the offspring?

a)

100 % tan

b)

100 % brown 

c)

50 % brown and 50% tan 

d)

75 % brown and 25 % tan 

3.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
4.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
5.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
6.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
7.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
8.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
9.
The shape of the DNA molecule is a double __________________?
a)
"S"
b)
helix
c)
rope
d)
curve
10.
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
11.

A tapeworm lives in the intestine of a cat absorbing nutrients through its skin. A tapeworm and a cat have this type of relationship.

a)

mutualism

b)

parasitism

c)

commensalism

d)

competition

12.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
13.
Which one of the following shows continuous variation?
a)
Blood group
b)
Height
c)
Male or female
d)
Tongue rolling
14.

Organisms with traits that are best suited for their environments are likely to have a greater chance for survival. These helpful traits, which arise due to genetic mutations, are known as _____________________.

a)

Mutation

b)

Adaptations

c)

Natural Selection

d)

Evolution

15.

All living things that are best adapted to their environments will be more likely to survive. This idea is known as _____________________ ____________________.

a)

Mutation

b)

Adaptations

c)

Natural Selection

d)

Evolution

16.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
17.

The two types of alleles are (select two)

a)

dominant

b)

doughnut

c)

expressive

d)

recessive

18.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
19.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
20.
The physical appearance of a trait is known as the-
a)
genotype
b)
phenotype
c)
characteristics
d)
intelligence

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