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PRACTICE- 2nd Semester Review

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

a)

50 % Brown fur and 50% White fur

b)

25 % Brown fur and 75% White fur

c)

75 % Brown fur and 25% White fur

d)

0% Brown fur and 100% White fur

2.
Why are there no white rabbit babies?
a)
The white gene is not present in any of the babies.
b)
It takes two recessive genes to show the trait.
c)
Grey is a better color.
d)
Baby five will be white.
3.

During transcription, this type of ribonucleic acid is responsible for copying the DNA and brining it out of the nucleus.

a)

tRNA

b)

mRNA

c)

rRNA

d)

dRNA

4.

Which of the following is the complementary mRNA sequence to this DNA strand: AACTGAA

a)

UUGACUU

b)

TTGACTT

c)

AACTGAA

d)

AACUGAA

5.
Which phrase best describes translation?
a)

converts mRNA into a protein

b)
catalyzes bonds between amino acids
c)
produces RNA from DNA molecules
d)
recycles tRNA molecules for reuse
6.
In eukaryotes, molecule 1 is found in
a)
ribosomes
b)
chloroplasts
c)
cytoplasm
d)
the nucleus
7.

This is the process by which organisms with variations more suited to their local environment survive and leave more offspring:

a)

artificial selection

b)

selective breeding

c)

common descent

d)

natural selection

8.

On the cladogram, which organism is the closest relative of the parrot?

a)

Frog

b)

Hare

c)

Caiman

d)

Parrot

9.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
10.

Similarities in bone arrangements, like those in the picture, support the hypothesis that...

a)

these organisms are not well adapted

b)

these organisms share a common ancestor

c)

these organisms all share the exact same DNA sequences

d)

these organisms are members of the same species