Molecular Biology, Genetics and Evolution
Quiz
•
Biology
•
9th - 12th Grade
•
Medium
+3
Standards-aligned
Charles Martinez
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are researchers comparing when they use a molecular clock?
versions of genes
alleles on chromosomes
stretches of DNA
sister chromatids
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do scientists use a molecular clock for?
They use DNA sequences to estimate how long a species has been on earth.
They use mutation rates in DNA to estimate the time that two
species have been evolving independently.
They use mutations in the alleles to figure out how different chromosomes have become over time.
They use amino acid chains to determine RNA sequences in the original species ancestor.
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Old-fashioned pendulum clock mark time with a swinging pendulum. A molecular clock also relies on a repeating process to mark time it is called a ____________
gene sequence
allele
chromosome pair
mutation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Some mutations have a major positive or negative effect on an organism’s phenotype. Many mutations, however, have no effect on phenotype. What are these mutations called?
Neutral mutations
Point mutations
Inversion mutations
Reverse mutations
Tags
NGSS.HS-LS3-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The more differences there are between the DNA sequences of the two species, the more time has elapsed since the two species shared a common ancestor.
True
False
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
NGSS.HS-LS4-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The use of molecular clocks is not simple, because ...
there are too many genes to work with.
genes are hard to read because they change quick.
there are many reasons that mutations happen in DNA.
there is not just one molecular clock in a genome.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
There are many different clocks, each of which “ticks” at a different rate.
This is because some chromosomes are different sizes.
This is because some genes accumulate mutations faster than others.
This is because some cells do not mutate at the same rate.
This is because some cells use clocks that work on a different scale.
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