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Summary Bio 1108 Lab Practical 2

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This is a study guide for the material covered in the Bio 1108 Lab practical 2 with Susan Herrick.

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  • November 11, 2024
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  • 2023/2024
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Uconn Bio 1108 Practical 1

Study guide for bio lab practical 1

Week 1:

1.lWhat is the scientific method?

2. What are the 6 steps of the scientific method?

Observing and stating the problem

Background research

Hypothesis

Test hypothesis

-experiment must be repeatable

-must eliminate bias

-require a control

-experimental group has a change called variable

Results and conclusion

Publication of results

3. What are the traits of a good hypothesis?

- Statements, can be tested, educated guess

4. What are the traits of a good experiment?

5. What is the difference between an experimental group and a control group?

6. Why is it important to publish the results of a scientific experiment?



Week 2:

Macroevolution: major evolutionary change

Vestige

Homology: similar anatomical structure

Cladogram: depicts evolutionary relationships among different taxa

, Taxon: the animals/organisms listed

Node: the point where a common ancestor is shared by two or more taxa

Synapomorphy: shared derived characteristics

Clade: consists of a group of organisms and includes the ancestor and all its descendants

Concepts to review in the manual:

Seven lines of evidence for macroevolution

1. Fossil record

2. Molecular sequence data

3. Structural homology

4. Developmental similarity

5. Vestigial structures

6. Convergent evolution

7. Patterns of animal and plant distributions

Fossil preservation types

- Impression: no organic matter preserved

- Compression: some organic matter preserved

- Petrification: plant tissues are infiltrated and/or replaced with minerals

- Amber: preservation of fossils within the fossilized plant sap (amber)

Three domains of life: eukarya, eubacteria, archaea

Geologic time scale

- Earth is 4.6 billion years old

- Broken up into eons, eras, periods, and epochs

Character matrix



Week 3:

Evolution: changes in the relative frequencies of alleles in a population’s gene pool over time

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