Natural Selection-Chapter 1 Review Question Preview (ID: 61601)


Chapter 1 Content For Natural Selection Chapter. TEACHERS: click here for quick copy question ID numbers.

______________ are instructions for making protein molecules and proteins molecules determine an organism's traits.
a) parents
b) genes
c) proteins
d) siblings

Over many generations, individuals with ____________ become more common in a population
a) no
b) genetic
c) helpful variations
d) non-helpful variations

Individual organisms inherit their genes from ________.
a) parents
b) siblings
c) sleeping
d) magic

Whether or not a variation is helpful depends on the __________.
a) traits
b) parents
c) environment
d) genes

Individuals with ____________ variations are more likely to live longer and have offspring.
a) helpful
b) no
c) neutral
d) non-helpful

Changes to genes that can lead to changes to protein molecules, which can result in changes to traits are called ____________.
a) mutations
b) proteins
c) distributions
d) genes

The ____________ of individuals with each trait in a population can change over time.
a) number
b) population
c) proteins
d) genes

8) Parents choose the genes they pass down to their offspring.
a) true
b) false
c)
d)

9) Individuals in a population with _________ variations become less common.
a) gene
b) helpful
c) no
d) non-helpful

10) ____________ is the number of traits represented on a histogram.
a) variation
b) distribution
c) population
d) gene

Mutations, which are changes to DNA lead to __________ of traits in a population.
a) variations
b) parents
c) selection
d)

Which is the current period of geologic time?
a) Cenozoic
b) Paleozoic
c) Precambrian
d) Mesozoic

Is there fossil evidence that humans and dinosaurs existed at the same time?
a) no
b) yes
c)
d)

About how old do scientists think the Earth is?
a) 4.6 billion years old
b) 4.6 million years old
c) 4.6 thousand year old
d)

Dinosaurs existed in the Mesozoic Era. What did this period of geologic time end with?
a) a mass extinction likely caused by an asteroid where over 80% of all life went extinct
b) a period of time where Earth's climate got really cold and froze just the dinosaurs
c) a mass extinction likely caused by a volcano where 90% of life went extinct
d)

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
c)
d)

Humans changed wolves into all breeds of dogs we have today by the process of artificial selection.
a) false
b) true
c)
d)

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