DNA, Genetics And Evolution (8) Question Preview (ID: 17129)
DNA, Genetics And Evolution -Middle School - Life Science.
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When scientists take genes from one organism and put them into another, this is called-
a) genetic engineering
b) cloning
c) selective breeding
d) inbreeding
Which of the following traits are NOT inheritable?
a) Hair Color
b) Shape of nose
c) Size of lips
d) Calluses on hand
Any structure or behavior that makes an organism better suited to its environment is called -
a) A mutation
b) A fossil
c) A selection
d) An adaptation
When offspring compete for food, only those with the BEST traits for their environment will survive. This is an example of which process first described by Charles Darwin?
a) Natural equilibrium
b) Variation
c) Gradualism
d) Natural Selection
Fossil evidence has supported the theory of evolution. In which type of rocks do we typically find fossils?
a) Sedimentary rock
b) Metamorphic rock
c) Igneous rock
d) Organic rock
Even though the finch and the sparrow are two different types of birds, they have similar beaks. Which statement best explains why their beaks are similar?
a) Both birds have the same offspring.
b) Both birds have the same type of nests.
c) Both birds eat the same types of food.
d) Both birds live in the highest point of a tree.
Mutations can sometimes produce beneficial changes in populations. For example, a mutant form of the desert mice is the black colored mice. After the volcano, the ground turned black. How is the black mouse's mutation beneficial to him?
a) The black mouse cannot be seen well by predators.
b) The light colored mice will be seen better by the predators.
c) The black mice taste bad to the predators.
d) The black mice can now find food more easily.
Which of the following is not a main component of DNA?
a) sugars
b) phosphates
c) nitrogen bases
d) salts
Where is DNA located within the cell?
a) cytoplasm
b) nucleus
c) vacuole
d) mitochondria
Why is DNA so important to organisms?
a) It contains coded instructions for proteins that is passed on from one generation to the next.
b) It contains large amounts of stored energy.
c) It contains large amounts of carbohydrates and fats that organisms need to reproduce.
d) It contains high levels of sugars and phosphates that are needed by organisms to maintain metabolism.
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