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Natural Selection-Chapter 1 Review
Test Description: Chapter 1 Content For Natural Selection Chapter
Instructions: Answer all questions to get your test result.
1) ______________ are instructions for making protein molecules and proteins molecules determine an organism's traits.
A
genes
B
proteins
C
siblings
D
parents
2) Over many generations, individuals with ____________ become more common in a population
A
helpful variations
B
genetic
C
non-helpful variations
D
no
3) Individual organisms inherit their genes from ________.
A
sleeping
B
magic
C
siblings
D
parents
4) Whether or not a variation is helpful depends on the __________.
A
genes
B
traits
C
parents
D
environment
5) Individuals with ____________ variations are more likely to live longer and have offspring.
A
non-helpful
B
neutral
C
helpful
D
no
6) Changes to genes that can lead to changes to protein molecules, which can result in changes to traits are called ____________.
A
distributions
B
mutations
C
genes
D
proteins
7) The ____________ of individuals with each trait in a population can change over time.
A
genes
B
number
C
population
D
proteins
8) 8) Parents choose the genes they pass down to their offspring.
A
false
B
true
9) 9) Individuals in a population with _________ variations become less common.
A
no
B
helpful
C
gene
D
non-helpful
10) 10) ____________ is the number of traits represented on a histogram.
A
population
B
distribution
C
variation
D
gene
11) Mutations, which are changes to DNA lead to __________ of traits in a population.
A
selection
B
variations
C
parents
12) Which is the current period of geologic time?
A
Paleozoic
B
Mesozoic
C
Cenozoic
D
Precambrian
13) Is there fossil evidence that humans and dinosaurs existed at the same time?
A
yes
B
no
14) About how old do scientists think the Earth is?
A
4.6 billion years old
B
4.6 thousand year old
C
4.6 million years old
15) Dinosaurs existed in the Mesozoic Era. What did this period of geologic time end with?
A
a period of time where Earth's climate got really cold and froze just the dinosaurs
B
a mass extinction likely caused by a volcano where 90% of life went extinct
C
a mass extinction likely caused by an asteroid where over 80% of all life went extinct
16) What is the difference between artificial selection and natural selection?
A
artificial selection is where the traits changed are brand new and natural selection is where existing traits are formed
B
in artificial selection humans determine which individuals reproduce and in natural selection the environment determines it
17) Humans changed wolves into all breeds of dogs we have today by the process of artificial selection.
A
false
B
true
*select an answer for all questions
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