Punnett Squares
Refer to the Punnett Square on the board. What is the percent chance that a child will be born BB?
0%
What is the job of proteins?
The build new cells and repair cells.
What is natural selection?
When some individuals are more likely to survive because they are better suited to adapt to their environment.
In asexual reproduction, are the genetics of the offspring the same or different to the parent?
Same
Do the different color 'Os' in Froot Loops taste the same or different?
Same
Refer to the Punnett Square on the board. What is the percent chance that a child will be born with brown eyes?
50%
What is epigenetics? What is variation?
How the environment affects our genetics
Differences in a species
What is artificial selection?
When a change consciously made by humans affects what genes are passed down to a new generation of a species.
In sexual reproduction, what happens to recessive traits, even if they are not seen in a generation?
They do not disappear, and they may show up in later generations.
How many pineapples does a pineapple plant produce each year?
1
Refer to the Punnett Square on the board. What are the phenotypes of both parents?
Parent 1 = brown eyes
Parent 2 = blue eyes
Are genes always turned 'on'?
No, environmental changes can make genes turn off
Give an example of natural selection.
Taller giraffes survive because they can reach the trees easier.
Birds with specific beak shapes are more likely to survive because they have an easier time getting food.
Relate the following terms (written or drawn):
DNA, Chromosomes, Cell Nucleus, Gene
Chromosomes are found in the cell nucleus. They are made of tightly coiled DNA. Genes are found on DNA.
What is the only natural food that never spoils?
Honey
Create a Punnett Square using the following information:
The gene for albinism in mice is recessive (a). Black fur is dominant (A). Create a Punnett Square that crosses a heterozygous dominant male with a homozygous recessive female.
Why might identical twins look different as they age?
The environment around them also affects their phenotypes.
Humans interfered with wolf evolution and created dogs.
Humans bred only edible corn to make the corn we have today.
In sexual reproduction, can a parent pass along a scar to a child? Why or why not?
No - this is a phenotype and NOT part of your genetics.
What was the first food planted in space?
Potatoes
How do Punnett Squares help us when it comes to genetic disorders?
They help us predict how likely an offspring will be to inherit a genetic disorder.
Why is it beneficial for variation to be present in a species?
So they have differences among them, and they cannot be wiped out by one instance (ex: disease or sudden change in temperature)
Why is natural selection beneficial in the evolution of a species?
It allows individuals of a species that are better adapted to their environment to survive. This means that future generations will be better suited to adapt to the space around them, making a genetically stronger species.
Create a Venn Diagram comparing sexual and asexual reproduction. You must include at least 2 differences and 2 similarities.
Sexual - 2 parents, genetically unique
Asexual - 1 parent, genetic clones
Both - offspring is produced, DNA is transferred from parent to offspring
What common pantry food can be converted into a diamond?
Peanut Butter