SBI 3U Evolution (1) Questions With Complete Solutions
Define evolution Correct Answers Changes in allele frequency
or genetic composition from generation to generation
How can duplication result in new genes? Correct Answers
The extra copy can mutate and gain a new function, and result in
new and beneficial proteins
How can fitness be calculated? Correct Answers Survival rate
x number of offspring
What are 6 pieces of evidence that support evolution? Correct
Answers Paleontology, embryology, biogeography,
comparative anatomy, molecular biology, modern day evidence
What are 9 types of proteins? Correct Answers Enzymes,
structural proteins, signaling proteins, regulatory proteins,
transport proteins, sensory proteins, motor proteins, defense
proteins, and storage proteins.
What are analogous features? Correct Answers Structures with
the same function but different evolutionary origins
Ex, butterfly wings vs bird wings
What are genes? Correct Answers DNA sequences that code
for different proteins
What are homologous features? Correct Answers Similarity in
structure and function that results from common ancestry
Ex, forelimb with five digits (pentadactyl limb)
, What are housekeeping genes? Correct Answers Genes that all
organisms have in common
What are large scale mutations? Correct Answers The deletion
or duplication of genes
What are point mutations? Correct Answers A broad term
describing an alteration where a single nucleotide base is
changed
What are the benefits of genetic variation? Correct Answers
Helps populations change over time
-Variations that help survival are passed on
-Variations that don't are eliminated
What are the benefits of large scale duplication? Correct
Answers It is viable and can be the source of new genes
What are the risks of large scale deletion? Correct Answers
Deleted genes decrease chances of survival
Ex, if a housekeeping gene is deleted, organism cannot grow or
perform basic cellular functions
What are the three types of point mutations? Correct Answers
insertion, deletion, substitution
What are vestigial features? Correct Answers Remnants of
ancestral characteristics that have lost their function
Ex, wisdom teeth, tail bone
Define evolution Correct Answers Changes in allele frequency
or genetic composition from generation to generation
How can duplication result in new genes? Correct Answers
The extra copy can mutate and gain a new function, and result in
new and beneficial proteins
How can fitness be calculated? Correct Answers Survival rate
x number of offspring
What are 6 pieces of evidence that support evolution? Correct
Answers Paleontology, embryology, biogeography,
comparative anatomy, molecular biology, modern day evidence
What are 9 types of proteins? Correct Answers Enzymes,
structural proteins, signaling proteins, regulatory proteins,
transport proteins, sensory proteins, motor proteins, defense
proteins, and storage proteins.
What are analogous features? Correct Answers Structures with
the same function but different evolutionary origins
Ex, butterfly wings vs bird wings
What are genes? Correct Answers DNA sequences that code
for different proteins
What are homologous features? Correct Answers Similarity in
structure and function that results from common ancestry
Ex, forelimb with five digits (pentadactyl limb)
, What are housekeeping genes? Correct Answers Genes that all
organisms have in common
What are large scale mutations? Correct Answers The deletion
or duplication of genes
What are point mutations? Correct Answers A broad term
describing an alteration where a single nucleotide base is
changed
What are the benefits of genetic variation? Correct Answers
Helps populations change over time
-Variations that help survival are passed on
-Variations that don't are eliminated
What are the benefits of large scale duplication? Correct
Answers It is viable and can be the source of new genes
What are the risks of large scale deletion? Correct Answers
Deleted genes decrease chances of survival
Ex, if a housekeeping gene is deleted, organism cannot grow or
perform basic cellular functions
What are the three types of point mutations? Correct Answers
insertion, deletion, substitution
What are vestigial features? Correct Answers Remnants of
ancestral characteristics that have lost their function
Ex, wisdom teeth, tail bone
