Environmental Genetic Variation Quick Check

1 of 51 of 5 Items
Question
Genes contain specific instructions for how to make(1 point)
Responses

proteins.
proteins.

nucleotides.
nucleotides.

gametes.
gametes.

carbon.
carbon.
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9 answers

The correct response is:

proteins.

Genes contain specific instructions for how to make proteins.

Epigenetic changes are generally(1 point)
Responses

not heritable changes in gene structure of a population.
not heritable changes in gene structure of a population.

heritable changes in genetic sequences of a population.
heritable changes in genetic sequences of a population.

heritable "on/off switches" for gene sequences due to environmental factors.
heritable "on/off switches" for gene sequences due to environmental factors.

not heritable genetic changes that are specific to an individual.

The correct response is:

not heritable changes in gene structure of a population.

Epigenetic changes typically refer to modifications that affect gene expression without altering the underlying DNA sequence and are often not passed on to the next generation.

Meiosis produces(1 point)
Responses

gamete cells
gamete cells

skin cells
skin cells

RNA
RNA

hydrogen molecules

The correct response is:

gamete cells.

Meiosis is the process that produces gametes, which are reproductive cells (sperm and eggs in animals).

Which factor could increase the possibility of mutations in your offspring?(1 point)
Responses

smoking tobacco
smoking tobacco

having a mutation on a non-gamete cell
having a mutation on a non-gamete cell

nothing because mutations are not inherited
nothing because mutations are not inherited

nothing because mutations are random

The correct response is:

smoking tobacco.

Exposure to harmful substances like tobacco can increase the likelihood of mutations in germ cells, which can then be passed on to offspring.

Epigenetics are different than mutations in that mutations:(1 point)
Responses

cannot be inherited
cannot be inherited

can change DNA sequences
can change DNA sequences

can be inherited
can be inherited

can change traits

The correct response is:

can change DNA sequences.

Epigenetics involves changes in gene expression without altering the underlying DNA sequence, while mutations involve actual changes to the DNA sequences themselves.