Question

can you answer these
Which best illustrates a result of natural selection?
a bat that is born with a wing that is missing the web
dark-colored hares living in a snowy area
mosquitoes that transmit disease to humans
giraffes having increasingly longer necks over time

Which of the following is an example of reproductive isolation?
two populations of finches that cannot produce viable offspring
two populations of finches that have different feather colors
two populations of salamanders that live in different lakes
two populations of salamanders that have different tail lengths

Mr. Morales is teaching a lesson on classification. He says that spiders are classified as a different group than insects because they have eight legs instead of six legs. He explains that spiders evolved first. Mr. Morales also says that having eight legs is the derived trait that separates the two groups. Antonio thinks Mr. Morales is wrong. Which piece of information is Antonio considering?
Spiders do not have eight legs.
Insects do not have six legs.
If spiders evolved first, six legs is the derived trait.
Spiders do not have derived traits, since they evolved first.

In a cladogram, when does a group of organisms branch off?
when a new trait evolves
when an ancestor becomes extinct
when it is discovered
when it becomes large enough

Which lists the correct order of evolutionary history?
crabs, jellyfish, reptiles
mammals, amphibians, crabs
vertebrate fish, crabs, mammals
jellyfish, reptiles, mammals

Answer 1

1) Giraffes having increasingly longer necks over time

2) Two populations of finches that cannot produce viable offspring

3) "If spiders evolved first, six legs is the derived trait."

4) When a new trait evolves

5) Jellyfish, reptiles, mammals