investigations
what drives adaptation?
the pressure to survive
what is the adaptation that was observed with Darwin's finch?
the finches had different beaks depending on what their environment was and what they were feeding on.
How does genetic variation affect the type of traits or the adaptations in the individuals of a species?
Genetic variation is responsible for all the different traits that an individual possesses
The remains of an organism, often its bones that are left after it has died.
fossil
"rannndommmm dancing"
name what TV show this phrase is from (double points for random dancing)
ICarly
Slight differences in an organism’s traits that are considered normal
What is the relationship between genotype and phenotype?
the genotype codes for the phenotype that is expressed
genotype→ genes→ genes found on chromosomes
phenotypes→ physical appearance→ people
What is the relationship between the survival of the individuals of a species and genetic variations?
Genetic variation is the reason why there are many unique individuals of a species in a population. Genetic variation allows a population of species to survive different environmental pressures.
When all individual organisms of a species have died
extinct
name the first 4 presidents of the United States.
1-George Washington
2-John Adams
3-Thomas Jefferson
4-James Madison.
what is the relationship between dominant and recessive alleles?
dominant allele is an allele that will produce a trait that masks another recessive trait for the same characteristic whereas the recessive allele is an allele that produces a trait that is masked by the dominant trait.
If a dominant trait and recessive trait are both present, the dominant trait will always be the trait that is expressed.
What is the relationship between homozygous and heterozygous pairs?
homozygous pairs are two of the same (2dom or 2rec) and heterozygous pairs are two different (1dom and 1rec)
Homozygous dominant= dominant trait= BB
Homozygous recessive= recessive trait= bb
Heterozygous (dominant)= dominant trait= Bb
Why do individuals of a species have different traits?
The genotype of an individual determines the phenotype of the individual. Genetic variation ensures that there are many possible genotypes and phenotypes that an organism can possess. This genetic variation is a result of mutations, recombination of genes, and the random mating of individuals.
A scientist who uses fossils to study organisms that once existed but are now extinct.
Paleontologist
name the character on the right? (extra points if you name the movie)
Kitty Soft Paws (from the movie Puss in Boots)
what is the difference between genes and alleles?
genes are sequences of DNA on the chromosome that encode specific traits, whereas alleles are different forms of the same gene
Daily Double:
what are the two different pairs of parents that can mate in order to produce homozygous recessive offspring.
1- two heterozygous dominant
2- two homozygous recessive
How can an environmental change affect a population?
When a new environmental pressure is introduced, some organisms in a population will not survive. The organisms with the genes that are most adapted to the environment will have the highest chance of surviving and passing their genes on to the next generation.
Sometimes called “Survival of the Fittest” Environmental pressures often give an organism with a favorable trait an advantage over other organisms without the trait. The organism with the trait is selected by the pressures and is able to survive and reproduce, but the organism without the trait cannot and is eventually forced into extinction.
natural selection
which quarterback has the most rushing touchdowns in the NFL?
Jalen Hurts
Daily Double:
create a punnet square and determine the % possible genetic makeups of offspring of a heterozygous mother with brown eyes and a homozygous recessive father with blue eyes.
see notepad.
As an environmental change occurs that reduces the abundance of shallow-swimming fish, Penguin A is in trouble. Even if there are plenty of deep-swimming fish in the area, penguin A simply can’t dive deep enough, due to its light, less dense bones, to get to them. It could actually starve to death while seeing an abundance of the deep-swimming fish below it. Penguin B, however, can go on feeding on the deep-swimming fish as before or eat the occasional shallow-swimming fish it comes across. Explain the two processes involved in this scenario. How are they affecting the penguins?
Natural Selection
Environmental Pressure
What is the relationship between genetic variation and natural selection?
If members of a species did not have different traits no natural selection could exist because all the members of that species would be equally adapted to each environmental pressure. However, there is genetic variation in populations and some individuals are more adapted to their surroundings than others. The ones that survive are more likely to pass on their genes.
A change in an organism’s environment that selects for organisms with slight differences in a trait that give that organism a survival or reproductive advantage
environmental pressure
at this Sunday's Grammy Awards, Taylor Swift won the award for Best Music Video, Short Form for "All Too Well: The Short Film." Winning this Grammy added one more to her collection. How many Grammy awards does Taylor Swift have?
12