100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary IB Biology Unit 5- Evolution and Biodiversity CA$10.48   Add to cart
Quickly navigate to
Preview
  2.  
  3. La Côte International School
  4.  
  5. IB Biology Unit 5- Evolution and Biodiversity

Summary

Summary IB Biology Unit 5- Evolution and Biodiversity

 135 views  0 purchase
  • Course
  • IB Biology Unit 5- Evolution and Biodiversity
  • Institution
  • La Côte International School
  • Book
  • Oxford IB Diploma Programme: Biology Course Companion

Summary Notes designed for the International Baccalaureate Diploma Programme. These notes are detailed yet concise, with all the information to achieve a 7 in IB Biology HL or SL. These notes were made using information from the IB syllabus, Oxford IB Diploma HL Biology Textbook, Bioninja and the B...

[Show more]

Preview 1 out of 3  pages

Document information

  • No
  • Unit 5- evolution and biodiversity
  • May 2, 2020
  • 3
  • 2019/2020
  • Summary

Subjects

  • ib biology
  • biology
  • unit 5
  • ib
  • evolution and biodiversity

Connected book

book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:

More summaries for

  • Class notes Biology Oxford IB Diploma Programme: Biology Course Companion
  • IBDP HL Biology - 2.2 Water Notes
  • Summary of the entire Biology book from the IB diploma
All for this textbook (33)

Written for

  • La Côte International School
  • IB Biology Unit 5- Evolution and Biodiversity
All documents for this subject (1)

Seller

avatar-seller
tiyadevinamistry

Reviews received

Content preview

Unit 5.1
• Evolution occurs when heritable characteristics of a species change.
• The fossil record provides evidence for evolution by revealing the features of an ancestor for
comparison against living descendants.
• Selective breeding of domesticated animals such as cows and dogs shows that artificial
selection can cause evolution.
• Comparing the anatomy of different organisms can be used to determine a common ancestor:
• Homologous structures are structurally similar but used for different things.
• Analogous structures have different origins/ancestors
but perform the same function.
• Homologous structures illustrate adaptive radiation
which is where organisms diversify rapidly from their
ancestors due to changes in the environment, e.g
pentadactyl limb ⟶
• Genetic variation within a species is described as
continuous and fits a normal distribution curve.
• If two populations of a species are exposed to different
environmental factors, their genetic compatibility will decrease as they evolve causing the
populations to diverge into different species, a process known as speciation.
• An example of this is peppered moths, which are usually white and camouflage on birch trees.
After the industrial revolution the mutated darker moth had a selective advantage as the trees
were covered in soot, causing numbers to grow.


Unit 5.2
• Natural selection: Genetic variation exists in a population causing competition. Those best
adapted to survive are more likely to reproduce and pass on their genes, resulting in a change in
allele frequency within the population over generations (more of one variation).
• Mutation, meiosis and sexual reproduction causes variation in a species (see Unit 10).
• Species tend to produce more offspring than the environment can support, leading to
competition for survival known as survival of the fittest.
• Adaptations make an individual more suited to its environment. They are passed to offspring.
• An example of adaptive radiation and natural selection are the beak types seen in the finches on
Daphne Major.
• In 1977 a drought occurred resulting in plants producing seeds with harder casings. Because of
this, the average beak size increased as those with bigger beaks were able to crack and eat
more seeds.
• An example of survival of the fittest is antibiotic resistance. When treated with antibiotics, the
antibiotic resistant bacteria will remain whilst other bacteria is killed, allowing the antibiotic
resistant bacteria to reproduce, causing the gene to become more frequent.


Unit 5.3
• Taxonomic rank: kingdom, phylum, class, order, family genus species (“Kinky People Can Often
Find Good Sex”).
• The Binomial name is used to classify species using the genus and species e.g Homo sapien.
• The three domains of life are archaea, bacteria and eukarya.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller tiyadevinamistry. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$10.48. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77764 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$10.48
  • (0)
  Add to cart