00:01
So in this question, we're asked, which are the following statements best describes a relationship between traits among a species and the order in which the traits appear in the fossil record? so when we're looking at a fossil record, here's the top.
00:18
This is the ground.
00:21
This is what you step on with a foot.
00:28
Okay? that's the ground.
00:30
Down here's the bottom of the fossil record.
00:36
Up here is newer, also called later, and down here are older, also called earlier.
00:58
Okay.
01:00
So typically stuff down here at the bottom shows more rudimentary species.
01:09
We see origins of species.
01:12
We see lots of interesting things down here at the bottom.
01:18
And so our answer choices, if we're looking at a, they're saying that traits that are more widespread across distantly related species appear earlier in the fossil record.
01:29
So shared traits occur earlier.
01:42
Right.
01:42
So shared traits would be down here.
01:48
That makes sense, right? because you have these shared traits and then you kind of diverge off into different directions.
01:53
So that makes sense.
01:56
Let's look at b.
01:57
Traits in a more widespread appear later in the fossil record...