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WorksheetsGenes & the Environment Review
Total questions: 15
Worksheet time: 8mins
When referring to influences on an organism's traits, the term "nurture" refers to...
genetic factors
care from the mother
environmental factors
care from the father
When referring to influences on an organism's traits, the term "nature" refers to...
genetic factors
environmental factors
factors that affect only plants
factors that affect only animals
True or False: Traits are influenced by either genetics or the environment, but not both.
True
False
Which of these is an example of a trait that is affected by both "nature"and "nurture"?
a muscular build
blood type B
green eye color
having a tattoo
Which of these correctly describes a controlled variable in an experiment?
a factor that is measured by the experimenter
a factor that is changed by the experimenter
a factor that an experimenter has no control over
a factor that is kept unchanged in an experiment
Which of these correctly describes an independent variable in an experiment?
a factor that is measured by the experimenter
a factor that is changed by the experimenter
a factor that an experimenter has no control over
a factor that is kept unchanged in an experiment
Which of these correctly describes a dependent variable in an experiment?
a factor that is measured by the experimenter
a factor that is changed by the experimenter
a factor that an experimenter has no control over
a factor that is kept unchanged in an experiment
True or False: In order for the results to be reliable and valid, an experiment should be performed many times.
True
False
Which of these would be considered a risk factor for developing skin cancer?
a high amount of sugar in the diet
a weekly exercise routine
constant exposure to sunlight
a reduced amount of sleep
True or False: Some genetic disorders may not have any negative effects, if there are no environmental risks.
True
False
Which of these are directly affected by a mutation?
proteins
traits
DNA
organisms
Why is it considered rare for a mutation to have a significant effect on an organism?
mutations are often automatically corrected by cells
mutations may occur in parts of DNA that do not code for proteins
mutations may not affect the structure of the protein very much
all of these
Which of these is considered a mutagen?
exposure to secondhand smoke
exposure to virus particles
exposure to x-rays
all of these
Which of these is an example of a beneficial mutation?
having a condition in which red blood cells carry extra oxygen
having hemophilia, which affects the ability of blood to form clots
having sickle cell anemia, which changes the shape of red blood cells
all of these
Which of these is considered a harmful mutation?
Having heterochromia (two different colored eyes)
Having color blindness, due to a recessive allele
Having brown eyes due to a dominant allele
all of these
