Mendelian Genetics
This man is classified as the father of genetics
Who is Gregor Mendel?
This gender is more likely to be affected by an X-linked recessive trait.
What is a male?
Bacteria reproduce in this manner.
What is a binary fission?
An advantageous trait that allows an organism to survive in it's environment and reproduce.
What is a competitive advantage?
This part of the cell cycle is responsible for growth and repair by making identical somatic cells
What is Mitosis?
Hh is this type of genotype
What is heterozygous?
In fruit flies, the gene for white eyes is X-linked recessive. Cross a white-eyed female with a normal red-eyed male. What is the probability of having a male offspring with white eyes? Show your work on the white board.
The probability of a male offspring with white eyes is 100%
Viruses reproduce in these two ways.
An environmental force that selects for one advantageous trait over another. Some examples could be predators, natural disasters, or climate.
What is a selection pressure?
This part of the cell cycle is responsible for reproduction by creating cells that are genetically unique.
What is Meiosis?
If present, this allele always shows phenotypically
What is the dominant allele?
Look at the board and identify what type of inheritance pattern is shown.
What is Autosomal Recessive?
Explain how binary fission occurs. (How many cells does it start with? How many does it end with?)
The parent cell replicates it's contents into two identical daughter cells.
List the 4 factors that drive Natural Selection.
What are Variation, Competition, Selective Pressures, and Reproduction?
How might exposure to things like radiation, UV light, and carcinogens affect an organism's DNA? Explain.
They may cause a mutation, which is an error in the coding. This mutation could cause the cell to grow uncontrollably and result in cancer.
How does an individual inherit an autosomal recessive trait specifically?
By inheriting one recessive allele from each parent.
Mr. and Mrs. Murphy had two children. The couple are expecting a third child soon. What is the probability of the couple having a child with A blood if Mr. Murphy has blood AB and his wife has B blood? Show your work on the white board.
If Mrs. Murphy is Heterozygous, they have a 25% chance of having a child with A blood. If she is Homozygous, they have a 0% chance of having a child with A blood.
What process is happening in this image?
What is the lytic cycle?
Using the 3 graphs of distribution of traits on the board, Label each as the type of selection they represent.
What are Stabilizing, Disruptive, and Directional?
This process leads to genetic variation during Meiosis.
What is Crossing Over?
Crossing wrinkle-seeded plants with pure round-seeded plants produces only round-seeded plants. What genotypic ratio can be expected from a cross of a wrinkle-seeded plant & a plant heterozygous for this trait?
50% heterozygous 50% homozygous recessive
Using the information on the board, answer the following questions:
1. If two rabbits that are both heterozygous mate, what are the genotypes and phenotypes of their offspring?
2. What will happen to the frequency of the F allele and the frequency of the Fr alleles?
2. The Fr alleles should decrease in population because if an organism is homozygous for them, that organism will die.
What process is happening in this image?
What is the lysogenic cycle?
In the forest of North America, the green tree frog and brown tree frog are common species living in this habitat. Due to droughts along the west coast of N. America, there have been multiple incidences of forest fires. Describe which population was most likely larger initially, describe what happened to both populations after the fire, and list the selection pressure that changed caused the potential change.
The Green population was most likely larger initially because it could camouflage. However, after the droughts, the green frogs no longer had camouflage whereas the brown likely did. So, we would expect the brown frogs to increase in population. The droughts are the selective pressure.
This happens during Prophase 1 of Meiosis 1 where homologous chromosomes pair up and exchange genetic material.
What is Crossing Over?