Other Mechanisms Of Evolution
- The number one mechanism that drives evolution is NATURAL
SELECTION. Mutation that creates new alleles is also another significant
driver of evolution.
- There are some other factors/mechanisms that also disturb/change the
Early scientists based many of their theories on life without experimentation
to test them.
Most scientists concluded that non-living things could be transformed into
living things. This theory called Abiogenesis AKA : (Spont
Evolution and Genetics Population Genetics
GENETICS : Finding an explanation for the INHERITANCE OF TRAITS
(Heredity), genetics will also help us better understand EVOLUTION.
- Variation within a population is key for a species to be able to evolve and
Divergence (Speciation) And Convergence
-The process in which populations develop differently from a common ancestral
Speciation: -The end result of divergence; when two species have slowly
evolved from one.
For speciation to officially
Homologous (Same Type) Structures: - If one compares the anatomical design of
some body structures one often sees a very similar design in these structures despite
the fact that the structures may have a very different function. The number of
bones and pl
The Role Of Sexual Reproduction In Variation And Evolution
A) Important Terms
- Phenotype: Appearance of a trait. Ex. Blue eyes
- Genotype: The gene make up of an organism for a specific trait.
- Asexual Reproduction: Reproduction that involves only one p
EVOLUTION is defined as the process of gradual change.
- In biology, evolution is the development of a species, organism, or organ from its original
or primitive state to its present state.
Ex. Is it possible that the Okapi and the Giraffe b
Trying to Explain the Mechanisms of Evolution
Lamarck vs. Darwin:
Lamarcks Theory of Inheritance of Acquired Characteristics:
I. - An organism changes to become more suited to its environment.
- Takes many generations for an appreciable amount of change t
The cell uses these amino acids to build new proteins for cells to
grow and repair themselves as well as to make new cells through cell
The blue-prints and processes for building these proteins are quite
Cellular Chemicals :
All life forms are composed of at least one cell, anything smaller than a cell
unit does not have life.
A cell has all the equipment (organelles) needed to sustain life, provided
that it is supplied with the correct chemicals.
Laboratory (Amino Acid Sequence In A Protein)
T = Thymine
A = Adenine
C = Cytosine
G = Guanine
2. The mRNA strands would consist of those codons: A-U-G-U-G-U-G-C-CU-U-A-C-C-C-A-U-U-U-U-U-U-G
Hypertension is the measuring of the pressure or force of blood against the walls of your blood
vessels called arteries. The force of the blood inside a blood vessel determines the blood
pressure. Normal blood pressure is below 120/80
Lifestyle changes can help you prevent high blood pressure. These changes are especially
important for people who have risk factors for high blood pressure, such as:
Family history, race, or age.
Lifestyle changes include 6 main s
Questions about the CNS
The PNS is mainly composed of the brain and the spinal cords.
Fill in the table below.
Some parts are allocortex.
Located in the head
Protected by the skull
Close to the pri
A model used to
membranes, in it, the
membranes are described
as a structurally and
lipid bilayer studded with
A substance dissolved in a
solvent to form a solution
Usually solids dissolved
within the solvent; the
solute is usually the
desired molecule which
is diffused across
Questions about the PNS
1. The PNS includes the cranial and spinal nerves.
2. Spinal nerves regulate organs of the body without conscious control.
3. Cranial nerves lead to muscles and regulate by conscious control.
4. The overarching function of the auto
Doodle of it!
- plant cell: right
under the cell wall
- animal cell:
structure that which
- phospholipids bilayer
- proteins float in bilayer
- membrane skeleton
surrounds the cell
Recombinant DNA Case Study
A farmer in Kenya has been given a tempting offer by some American
biological engineers. They tell him that if he uses their genetically modified
bean seeds he will no longer be required to buy costly pesticides and he will
Ch.13 Invertebrates with a true coelom
Having a true coelom is one of the most important evolutionary adaptations
of the animal kingdom.
The coelom (a body cavity) develops between mesoderm, having a definite
peritoneum lining and mesenteries (connect t
Organic compounds identification
Investigate the presence of lipid, carbohydrates, and proteins in the given substance.
- 10 test tubes
- 20 mL honey solution
- Test tube racks
- 20 mL egg white and water mixture
- Test tube holder
A fluid such as water passive transport;
that dissolves solutes used to establish a
Transfer of a
substance into or out Active transport is
of a cell from a
0 They are radially 3 sq Wnlvacé. v isnt . What does that mean?
0 they also have true i \ gs w; . Three examples of tissues include
mwve , cluttx'w'iavc; ,and >v< in, /~i: putty. Wm,
0 members of this phylum include Hydra, it 5' i. -. ,
Stay the same.
Process by which the internal environment (inside body) remains relatively
constant regardless of the conditions in the external environment.
Blood glucose concentration remains about 0.01.
pH of blood is always aroun
Biological molecules (Nucleic Acid and ATP)
DNA (deoxyribonucleic acid)
RNA (ribonucleic acid)
Function: aid in reproduction
Aid in protein synthesis
Contain hereditary info in the form of genes
Made by dehydration synthesis using nucl