A person's height is affected by an (estimated) ______ genes.
50
75
100
125
Question 2Approximately 99 percent of human genes are also present in other creatures. Given the percentage of genes we share with cats, for example, why are we so different from them?
The presence of junk DNA and regulator genes found in humans
influence other genes.
Only humans possess chromosomes which influence other chromosomes.
Humanoid chromosomes are absent in other species.
Other animals have fewer regulator genes than huma
Question 3If your mom's family members all have very dark skin and your dad's family members all have very light skin, your skin color may be somewhere in between. Each parent's genes contributed in a(n) ______ fashion.
dominant-recessive
dizygotic
additive
nonadditive
Question 4Why is it difficult to determine exactly how many genes are in the human genome?
because the human genome project is ongoing
because the genome is constantly changing
because DNA mutates over time, therefore changing the appearance of
genes
because it is sometimes difficult to tell where one gene ends and another
begins
Question 5One of the surprising findings of the Human Genome Project is that
humans have about 1 million genes.
all living creatures share genes.
humans and chimpanzees share about 25 percent of their genes.
human genes are not shared by any other species.
Question 6The process by which biochemical elements silence certain genes is known as
polygenics.
methylation.
epigenetics.
mylenation.
Question 7One of the discoveries from the Human Genome Project is that the total number of genes in a person is between
18,000 and 23,000.
10,000 and 15,000.
80,000 and 100,000.
100,000 and 150,000.
Question 8Because most traits are polygenic, they are
the result of dominant genes.
constantly changing.
produced by many genes.
the result of recessive genes.
Question 9Development occurs because of an interaction between genetic and environmental forces This statement most closely describes.
behaviorism.
psychoanalysis.
socioculturalism.
epigenetics.
Question 10Dan plans to conduct research examining innate language ability and second-language learning. Which field will guide his research?
behaviorism
epigenetics
cognition
socioculturalism