WorksheetsNatural Selection
Total questions: 25
Worksheet time: 15mins
What is a mutation?
When animals have extra legs
When a frog changes from a tadpole
When genes or DNA have been alterd or changed
When RNA is upside down
Are mutations ALWAYS passed down to offspring?
Yes
No
Why do offspring share traits from both parents?
offspring choose the traits they want
offspring get 75 percent of the traits from their father
offspring get 50 percent of each parents DNA
What must organisms do when an environment changes?
Adapt
Camoflauge
become common
fight
Which is NOT an example of an adaptation?
The adaptations brought about by natural selection happen in about a 10 year time span
True
False
Mutations are...
beneficial when it helps survival and reproduction
neutral when it doesn't help or hinder survival and reproduction
harmful when it lowers the chance for survival and reproduction
When two or more populations no longer successfully reproduce it is called...
species
order
speciation
a shame
Which are causes of speciation? Choose all that apply
Isolation caused by mountains, rivers and man-made structures
preference for different foods
change in environment
different mating behaviors
Members of a species can breed with other members of the same species.
True
False
When members of a species breed, their offspring are able to produce offspring.
True
False
Members of the same species always live in the same geographical location.
True
False
Members of the same species will always have a similar body appearance.
true
false
Mutations can be...
Harmful
Beneficial
Neutral
All of the Above
Mutations are...
Changes in the sequence of DNA
Broken chromosomes
Bad genes
What is a type of Mutation?
Deletions
Insertions
Substitutions
All of the Above
Mutations are SOMETIMES helpful to the organism.
true
false
Which are causes of speciation? Choose all that apply
Isolation caused by mountains, rivers and man-made structures
preference for different foods
change in environment
different mating behaviors
