the gradual change in characteristics of a population over time. It changes the characteristics of a population or species, NOT of individuals. Also defined as changes in allele frequencies over time.

Who discovered the Theory of Evolution by Natural Selection?

Charles Darwin and William Wallace

List the 3 significant influences on Darwin

1. Lyell - Principles of Geology: earth is older than 6000 years 2. Malthus - overincreasing population is bad 3. Artificial Breeding

List the 4 Postulates For Evolution by Natural Selection.

1. individual variability of traits 2. more offspring are produced than can survive 3. struggle for existence 4. differential success in survival and reproduction

Jean-Baptiste de Lamarck's theory of evolution in 1809 was - ?

Inheritance of ACQUIRED CHARACTERISTICS: populations/species could change over time.

Define Darwin's "Descent with Modification". He used this to describe evolution.

the branching off of species from the common ancestor, as opposed to linear evolution (worm->rat->cow->human).

remains of life, not necessarily part of the organism: feces, footprint, hair

List 5 evidence for Evolution:

1. Fossils 2. DNA Sequencing 3. Embryology & development of embryos 4. Biogeography 5. Comparative Anatomy

Define Vestigal Traits.

a reduced or incompletely developed structure that has no function or reduced function but is similar to functioning organs or structures in closely related species.

Define Adaptation. Compare it to acclimation.

it is heritable trait that increases an Individual's Darwinian fitness in a particular environment relative to individuals lacking that trait. Acclimation doesn't involve heritable traits.

similarity that exists between species descended from a common ancestor.

Define Genetic Homology.

similarity in the DNA sequences of different species.

Define Developmental homology.

a similarity in embryonic traits.

Define Structural homology.

refers to similarities in adult morphologies.

Evolution by Natural Selection occurs when heritable variation __ __ __.

leads to differntial success in survival and reproduction.

The ability of an organism to produce a larger number of surviving offspring than other individuals in the same population.

Any change in the hereditary material of an organism.

Define Natural Selection.

The process by which individuals with certain heritable traits tend to produce more surviving offspring than individuals without those traits, resulting in a change in the genetic makeup of the population.

Differences in traits among members of a population.

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

BIOL212.CH24

CH24.Evolution by Natural Selection

Question	Answer
Define Evolution.	the gradual change in characteristics of a population over time. It changes the characteristics of a population or species, NOT of individuals. Also defined as changes in allele frequencies over time.
Who discovered the Theory of Evolution by Natural Selection?	Charles Darwin and William Wallace
List the 3 significant influences on Darwin	1. Lyell - Principles of Geology: earth is older than 6000 years 2. Malthus - overincreasing population is bad 3. Artificial Breeding
List the 4 Postulates For Evolution by Natural Selection.	1. individual variability of traits 2. more offspring are produced than can survive 3. struggle for existence 4. differential success in survival and reproduction
Jean-Baptiste de Lamarck's theory of evolution in 1809 was - ?	Inheritance of ACQUIRED CHARACTERISTICS: populations/species could change over time.
Define Darwin's "Descent with Modification". He used this to describe evolution.	the branching off of species from the common ancestor, as opposed to linear evolution (worm->rat->cow->human).
define a Fossil	remains of life, not necessarily part of the organism: feces, footprint, hair
List 5 evidence for Evolution:	1. Fossils 2. DNA Sequencing 3. Embryology & development of embryos 4. Biogeography 5. Comparative Anatomy
Define Vestigal Traits.	a reduced or incompletely developed structure that has no function or reduced function but is similar to functioning organs or structures in closely related species.
Define Adaptation. Compare it to acclimation.	it is heritable trait that increases an Individual's Darwinian fitness in a particular environment relative to individuals lacking that trait. Acclimation doesn't involve heritable traits.
How old is earth?	4.6 billion years old
Define homology.	similarity that exists between species descended from a common ancestor.
Define Genetic Homology.	similarity in the DNA sequences of different species.
Define Developmental homology.	a similarity in embryonic traits.
Define Structural homology.	refers to similarities in adult morphologies.
Evolution by Natural Selection occurs when heritable variation __ __ __.	leads to differntial success in survival and reproduction.
Define fitness.	The ability of an organism to produce a larger number of surviving offspring than other individuals in the same population.
Define mutation.	Any change in the hereditary material of an organism.
Define Natural Selection.	The process by which individuals with certain heritable traits tend to produce more surviving offspring than individuals without those traits, resulting in a change in the genetic makeup of the population.
Define variation.	Differences in traits among members of a population.

Created by: boborii

"Know" box contains:
Time elapsed:
Retries: