Bio182 Decent With Modification Flashcards Preview

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Flashcards in Bio182 Decent With Modification Deck (22)
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1
Q

Why is there such a variety of life. I.e. bacteria Alfa humans ?

A

Unity of life is do to the fact that all organisms came from an original cell. Evolution and reproduction allows change in organisms

This is a new way of thinking of things compared to how humans use to think about life

2
Q

French figure cuvier?

A

He was know as the father of paleontology-the science of fossils

He was a creationist.

Strata told him of extinction.

3
Q

How are fossils found?

A

In layers known as different strata

4
Q

What did Cuvier notice?

A

That different strata contained different fossils

5
Q

Strata do what?

A

Give us a relative date of a fossil compared to others by noticing which strata they are in

6
Q

Hutton

A

Scottish geologist

Believed that physical features on the earth are explained by everyday processes like erosion built the grand cannon from the Colorado river

Things didn’t just pop up into existence but came through these processes

Lyell said these things are still happening

Therefore the earth had to be around for a long time

7
Q

How old is the earth?

A

Roughly 4.5 billion years

8
Q

Lammark

A

Was the first truly scientific revolutionary thinker. Gave reason but he was wrong.

He said acquired traits get passed on from parient to offspring

9
Q

Bonus tree is an example of what?

A

An artist giving a tree an acquired trait to look small. However this does not get passed on as the seeds will grow to a normal sized tree.

10
Q

Heritable traits

A

Traits that get passed on to offspring through DNA which is made up of genes

11
Q

Darwin

A

Was a naturalist. And went on a voyage in 1840 on the beagle( which was originally sent to get a better understanding of South America) Darwin went along.

Originally a creationist. And was afraid to publish his finding in evolution.

Wrote a book on how evolution occurs through natural selection

12
Q

What is Darwin’s famous book?

A

On the origin of species by means of natural selection

13
Q

What causes evolution

A

Natural selection

14
Q

Natural selection

A

Nature selects against disadvantageous traits and for advantageous traits or those most fit to their environment

Therefore organism better fit to their environment tend to survive and produce more viable offspring g that will reproduce

15
Q

Evolution

A

A change in allele frequencies from generation to generation by natural selection

16
Q

Wallace

A

Pressured Darwin to publish his finding by almost publishing his first. Found the same things as Darwin but independently

But respected Darwin and allowed him to publish

17
Q

Artificial selection

A

Consciously choosing desired traits that one wants for a species to have. An example of this is dog breeding or agricultural

18
Q

2 observation Darwin made

A
  1. In any natural occurring population of organism, there is variation in their traits.
  2. natural population always produce more offspring than an environment can support
19
Q

Darwin’s inferences

A

Individuals that are more well suited to their environment tend to leave more offspring than others

Over time favorable traits accumulate in the population

20
Q

Homologous

A

This nag that share structures because of common ancestry

21
Q

Analogy or analogous structures

A

Not about shared ancestry

Novak features that evolved independently from another species

Causes by convergent evolution

22
Q

Convergent evolution

A

Evolution that is occurring independly but in the same way in separate groups because of similar environments