Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

topic 5.1 answers, Summaries of Law

Universiteit GentLaw

The fossil record shows that changes have occurred in organisms over time (evolution). The law of fossil succession shows that certain organisms appear in ...

Typology: Summaries

2021/2022

Uploaded on 08/05/2022

jacqueline_nel
jacqueline_nel 🇧🇪

4.4

(242)

3.2K documents

1 / 2

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
5.1 Evidence+for+Evolution+
Evolutionary+Theory+
Define&evolution&
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
#
With&the&aid&of&the&diagram,&compare&the&evolutionary&theories&of&Lamarck&and&Darwin&
#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
&
Distinguish&between&natural&selection&and&artificial&selection&
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
#
Evolutionary+Evidence+
Outline&the&evidence&for&evolution&provided&by&the&fossil&record&
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
…………………………………………………………………………………………………………………………………………………..........#
Evolution is the cumulative change in the heritable characteristics of a population
It is a change in the allele frequency of a gene pool across successive generations
Lamarck proposed that organisms evolved new characteristics as a consequence of habitual use or disuse
(e.g. giraffes evolved long necks via stretching to reach higher leaves)
Darwin proposed that organisms randomly developed new characteristics that were passed on for being beneficial
(e.g. long neck giraffes survived over short neck giraffes because they could reach more leaves)
Natural selection occurs when the environment determines which adaptations are beneficial or detrimental
Artificial selection occurs when humans make this determination (via genetic modification or selective breeding)
A fossil is the preserved remain or trace of an organism from the remote past (totality of fossils = fossil record)
The fossil record shows that changes have occurred in organisms over time (evolution)
The law of fossil succession shows that certain organisms appear in the fossil record in a consistent order
(this indicates an evolutionary sequence of development from ancestral forms)
Transitional fossils represent intermediary forms within the evolution of a genus (e.g. archaeopteryx)
pf2

Partial preview of the text

Download topic 5.1 answers and more Summaries Law in PDF only on Docsity!

5.1 Evidence for Evolution

Evolutionary Theory Define evolution ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... With the aid of the diagram, compare the evolutionary theories of Lamarck and Darwin ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Distinguish between natural selection and artificial selection ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Evolutionary Evidence Outline the evidence for evolution provided by the fossil record ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Evolution is the cumulative change in the heritable characteristics of a population It is a change in the allele frequency of a gene pool across successive generations Lamarck proposed that organisms evolved new characteristics as a consequence of habitual use or disuse (e.g. giraffes evolved long necks via stretching to reach higher leaves) Darwin proposed that organisms randomly developed new characteristics that were passed on for being beneficial (e.g. long neck giraffes survived over short neck giraffes because they could reach more leaves) Natural selection occurs when the environment determines which adaptations are beneficial or detrimental Artificial selection occurs when humans make this determination (via genetic modification or selective breeding) A fossil is the preserved remain or trace of an organism from the remote past (totality of fossils = fossil record) The fossil record shows that changes have occurred in organisms over time (evolution) The law of fossil succession shows that certain organisms appear in the fossil record in a consistent order (this indicates an evolutionary sequence of development from ancestral forms) Transitional fossils represent intermediary forms within the evolution of a genus (e.g. archaeopteryx)

With the aid of the diagram, describe the process of fossilisation ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Outline, with examples, the evidence for evolution provided by selective breeding ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Explain, using the diagram, how the pentadactyl limbs of vertebrates provides evidence of evolution ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... ………………………………………………………………………………………………………………………………………………….......... Fossilisation preserves hard body parts (although soft parts may leave trace remains - such as imprints) Fossilisation is a rare process that requires the preservation of remains (i.e. no scavenging), anoxic conditions (i.e. no oxygen for decomposition) and high pressure (to turn the hard body parts into fossilised minerals) These conditions are most likely to occur (on land) as a result of rapid burial Selective breeding involves the intentional mating of animals with desired characteristics (artificial selection) As human intervention drives the selection process, changes will occur over fewer generations and will promote the evolution of phenotypic extremes (hence, easier to identify the evolutionary pathway) Examples: Horses (bred for speed vs power), cows (Belgian blue = muscle mass), large variations in dog breeds Homologous structures are anatomical features that share a common underlying structure despite having distinct functions - the pentadactyl limb of mammals is an example of a homologous structure The rapid diversification of the anatomical feature is a result of adaptive radiation Closely related species will have more similarities in their homologous structures