NEW
Font size
S
M
L
XL
WorksheetsBio 2nd Semester Final Units 7-10
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A vestigial structure in one organism can be defined as a reduced form of a functional structure in another organism. Ex) wisdom teeth in humans
a)
True
b)
False
2.
Adaptations in populations are caused by random mutations that happen in individuals.
a)
True
b)
False
3.
Fossils, although interesting, do not actually provide evidence of evolution.
a)
True
b)
False
4.
Artificial selection shows evidence of evolution that is directed by humans.
a)
True
b)
False
5.
A mutation is a random change in genetic material.
a)
True
b)
False
6.
Embryos of different organisms exhibit homologous structures during certain phases of development that become totally different structures in adult forms. This indicates that organisms evolved from a common ancestor.
a)
True
b)
False
7.
Which combination of characteristics in a population would provide the greatest genetic variation?
a)
small population, few mutations
b)
small populations, many mutations
c)
large population, few mutations
d)
large population, many mutations
8.
What term best describes the structures shown in the picture?
a)
homologous structures
b)
analogous structures
c)
vestigial structures
d)
heterologous structures
9.
Which is following a correct statement about the relationship between natural selection and evolution?
a)
Natural selection results from evolution.
b)
Natural selection includes natural selection as a part of it.
c)
Natural selection is one mechanism of evolution.
d)
Natural selection and evolution are the same thing.
10.
A species with a low level of genetic diversity has a higher chance of becoming extinct than a species with a
high level of genetic diversity.
a)
True
b)
False
11.
The best way to restore a damaged ecosystem is to introduce predators to control the population of endemic (native) species.
a)
True
b)
False
12.
Asexual reproduction would increase the genetic diversity of a species.
a)
True
b)
False
13.
What type of limiting factor:
as the number of cheetahs drops, the number of gazelles increases
a)
a. density dependent
b)
b. density independent
14.
What type of limiting factor:
an ice storm kills many ducks
a)
a. density dependent
b)
b. density independent
15.
What type of limiting factor:
hurricanes frequently reduce palm tree populations
a)
a. density dependent
b)
b. density independent
16.
T/F: Population-limiting factors keep a population from increasing indefinitely.
a)
a. true
b)
b. false
17.
Black coat is dominant over white coat in guinea pigs. A homozygous black pig is mated with
another homozygous black pig.
What are the GENOTYPES of the parents?
a)
BB x BB
b)
BB x Bb
c)
Bb x Bb
d)
bb x bb
18.
Black coat is dominant over white coat in guinea pigs. A homozygous black pig is mated with
heterozygous black pig.
What % of the offspring will be white?
a)
0%
b)
25%
c)
50%
d)
100%
19.
The colors of radishes are controlled co-dominant genes. The color may be red (RR), white
(WW), or speckled (RW).
What % of offspring will be speckled if you cross a red with a white?
a)
0%
b)
25%
c)
50%
d)
100%
20.
Use the codon wheel or chart to list the amino acid sequence for the following DNA codons:
AAA CCA TTA
a)
Phe- Gly- Asp
b)
Lys- Pro- Leu
c)
Asp- Gly- Phe
d)
Asp- Val- Arg
Reset
