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