What is the term used to describe homologous chromosomes exchanging genetic material during meiosis? (1 point)
crossing-over
trait distribution frameshift mutation self-pollination
The term used to describe homologous chromosomes exchanging genetic material during meiosis is "crossing-over."
When scientists analyzed the variations of color expressed in monkey flowers, what did they realize about the offspring of purple monkey flowers? (1 point)
The traits expressed did not result from changes in pollination.
The traits expressed did not result from changes in the genetic code.
The traits expressed did not result from frameshift mutations.
The traits expressed did not result from environmental factors.
When scientists analyzed the variations of color expressed in monkey flowers, they realized that the traits expressed by the offspring of purple monkey flowers did not result from changes in the genetic code.
How did NASA help to distinguish genetic factors from environmental ones when studying the effects of living space?
(1 point)
By analyzing changes in one twin on Earth and the
other in space.
By running experiments on astronauts that were in space for over a year.
By observing changes in retired astronauts over a period of ten years.
By introducing animals and other organisms that could be studied in space.
By analyzing changes in one twin on Earth and the other in space, NASA helped to distinguish genetic factors from environmental ones when studying the effects of living space.
One way scientists can analyze and interpret data to identify potential environmental factors is by (1 point)
analyzing the distribution or variation in traits across a population.
confirming that a trait is always expressed in an organism.
determining how traits are expressed in an organism.
studying how genes are organized in DNA of one organism.
One way scientists can analyze and interpret data to identify potential environmental factors is by analyzing the distribution or variation in traits across a population.
Can sunlight change the distribution of traits in a population?
(1 point)
Yes, because the environment can factor into the
distribution of traits.
No, because the environment can only change traits in individual organisms.
No, because the environment can only change behaviors.
Yes, because the environment is the only factor that can change traits.