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BrainPop - DNA
By Jennifer Istre
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Last updated almost 3 years ago
10 questions
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Question 1
1.
Inherited traits are:
Dependent on diet
Acquired during an organism’s life
Free of mutations
Passed on from parent to offspring
Question 2
2.
The average size of a grocery store chicken has more than doubled in the past century. What is the most likely reason for this change?
Natural selection resulted in a larger species of chicken
Artificial selection created a larger breed of chicken
Mutations occur less frequently in chickens than they did a century ago
Grocery stores used to sell younger chickens
Question 3
3.
Gregor Mendel observed that pea plant traits did not blend in their offspring. This led him to conclude that:
Traits are inherited in separate units
Offspring inherit genes from only one parent
Pea plants do not have genes
Traits are not inherited
Question 4
4.
Every cell in an organism has the same number of chromosomes, except:
Skin cells
Neurons
White blood cells
Reproductive cells
Question 5
5.
Genes are segments of DNA in a chromosome. A gene carries the __________for a trait.
Question 6
6.
The building blocks of DNA are like alphabet letters, because they:
Are each associated with a particular sound
Can be used in a variety of languages
Each have an uppercase and a lowercase form
Spell out different instructions depending on their order
Question 7
7.
Genes influence an organism’s traits by coding for __________.
Question 8
8.
Genetic mutations are __________harmful.
Question 9
9.
How do mutations affect natural selection?
They slow down the process
They prevent organisms from evolving
They affect how likely an organism is to survive and reproduce
They are the leading cause of extinction
Question 10
10.
How is editing the genetic code different from artificial selection?
It enables humans to influence the inheritance of DNA
It enables humans to directly change DNA
It can only be used on animal DNA
It is not yet possible to edit the genetic code