Mendel
Terminology
Codominance
Incomplete Dom.
Punnett Squares
100
What type of plant did Mendel work with?
Peas
100
Another name for a piece of DNA that codes for a trait is a _____.
Gene
100
Define codominance. Give an example.
When both traits are expressed equally in each other's presence. Ex: Blood types A and B
100
What is the genotype of a red snapdragon?
RR
100
Which letters are always first in a genotype, capitals or lower case?
Capitals
200
Give two reasons why these plants were studied?
Easy to see traits Quick growth rate Self or cross pollinators In his garden already
200
These "pieces of DNA" usually exist in pairs called ____.
Alleles
200
Who is Landsteiner?
He did research on the ABO blood typing system in the early 1900's.
200
What is the genotype of a white snapdragon?
WW
200
How many squares is a punnett square dealing with one trait? Two traits?
4, 16
300
Another name for true-breeding is ________pollination.
self
300
Explain what a phenotype is and give an example.
Characteristic or trait, Ex: Yellow flowers, tall plants, etc.
300
Give all of the possible genotypes for the following blood types: Type A Type B
IAIA or IAi IBIB or IBi
300
What is the genotype of a pink snapdragon?
RW
300
Do a punnett square for the following: Cross a Heterozygous tall person with a Homozygous tall person. Show genotypes and phenotypes for the offspring.
50% TT, tall 50% Tt, tall
400
Another name for a hybrid is ________ pollination.
cross
400
Explain what a genotype is and give an example.
A written expression of a trait using letters of the alphabet. Ex: Tt, DD, ss
400
What blood type is the "universal receiver"? What about the "universal donor"? What are the genotypes for each of these blood types?
AB O IAIB ii
400
What is the definition for incomplete dominance?
When two traits are expressed, but in an intermediate form. Ex: Red and white = pink
400
Do a punnett square for the following: Cross a Normal carrier female with a hemophiliac male. Show genotypes and phenotypes for all of the offspring.
One carrier female, one hemophiliac female One normal male, one hemophiliac male
500
Where did Mendel do his experiments? What was he? (Country and place, title)
Austria, Monastery, Monk
500
Explain the differences between the following and give examples of each set: Homozygous vs. Heterzygous Dominant vs. Recessive
Same form of a gene vs. Different forms of a gene Ex: Tt vs. ss A trait that masks another trait vs. a trait that is masked by the dominant trait and needs to have both copies of the recessive gene in order to show up. Ex: Bent thumbs vs. straight thumbs
500
Do a punnett square for the following: What are the possible genotypes and phenotypes for the children of a type O and type AB parent?
50% IAi 50% IBi
500
Do a punnett square for the following cross: Cross a white snapdragon with a pink snapdragon. Show possible genotypes and phenotypes of the offspring.
50% White 50% Pink
500
Big one! Dominant traits= Black hair, curly hair Cross two Heterozygous dark, heterozygous curly-haired people. Show all possible genotypes and phenotypes for the offspring and how many of each out of 16.
9 Dark, curly 3 Dark, straight 3 Light, curly 1 Light, straight
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