Mendelian
Genetics
Genetics and Heredity
Non-
Mendelian
Genetics
Punnett
Squares
Pedigrees
Vocabulary
Mendelian Genetics :
$100 Question
When a homozygous dominant genotype is crossed with a homozygous recessive genotype, what is the phenotypic ratio expected in the F2 generation?
Mendelian Genetics :
$100 Answer
3:1
Mendelian Genetics :
$200 Question
In a dihybrid cross, a purebred dominant and a purebred recessive individual
(they are purebred for both traits) are crossed. What is phenotypic ratio of the
F2 generation?
Mendelian Genetics :
$200 Answer
9:3:3:1
Mendelian Genetics :
$300 Question
A ___________allele is one that is always expressed when that allele is present.
Mendelian Genetics :
$300 Answer dominant
Mendelian Genetics :
$400 Question
What is Mendel’s Law of Segregation?
Draw a diagram on the white board to illustrate this law.
Mendelian Genetics :
$400 Answer
Alleles separate during gamete formation
Mendelian Genetics :
$500 Question
What is the law of independent assortment? Draw a diagram to aid in the explanation.
Mendelian Genetics :
$500 Answer
Genes are separate chromosomes assort into gametes independently
Non-Mendelian:
$100 Question
Which blood type is the universal donor?
Why?
Non-Mendelian :
$100 Answer
Type O, it does not have any antigens on the surface of the red blood cells (they will not react with the antibodies in the other blood types)
Non-Mendelian :
$200 Question
Skin color, eye color, and height in humans are examples of these type of traits that cause a bell shaped curve set of phenotypes
Non-Mendelian :
$200 Answer polygenic
Non-Mendelian :
$300 Question
This type of inheritance exists when there exists a phenotype that is “intermediate” between those of the parents
Non-Mendelian :
$300 Answer
Incomplete dominance
Non-Mendelian :
$400 Question
This type of inheritance takes place when you can see both phenotypes expressed when two different alleles are inherited
Non-Mendelian :
$400 Answer
Co-dominance
Non-Mendelian :
$500 Question
This type of inheritance will have ONLY female carriers
Transcription :
$500 Answer
Sex-linked
Punnett Squares:
$100 Question
The ability to taste PTC is dominant over non-tasting. A non-taster and a heterozygous taster have children. What is the phenotypic ratio of the offpring?
Punnett Squares :
$100 Answer
1 taster:1 nontaster
Punnett Squares :
$200 Question
A person with type A blood marries a person with type B blood. They have a child with type O blood. Create the
Punnett square to show this inheritance.
What is the chance of having a child with type O?
Punnett Squares :
$200 Answer
25%
Punnett Squares :
$300 Question
Brown hair (B) is dominant blonde hair (b) is recessive.
Straight hair (S) is dominant and curly hair
(s) is recessive.
A man who is homozygous for brown, straight hair mates with a woman who is homozygous for blonde, curly hair. What is the chance they will have a child with
brown, straight hair?
Punnett Squares :
$300 Answer
9/16
Punnett Squares :
$400 Question
Colorblindess is sex-linked recessive. A man who is colorblind marries and carrier female. What is a chance they will have a child who is color blind?
Punnett Squares :
$400 Answer
50%
Punnett Squares :
500
What is a test cross? What do the results of a test cross indicate?
Punnett Squares : 500
If you do not know the genotype of an individual with the dominant phenotype you can cross it with a homozygous recessive individual.
All dominant phenotype in F1 = homozygous dominant
1:1 ratio of dominant phenotype to recessive phenotype
Pedigrees:
$100 Question
A circle represents….
Pedigrees :
$100 Answer female
Pedigree:
$200 Question
What type of inheritance pattern?
Pedigrees :
$200 Answer
Autosomal recessive
Pedigrees :
$300 Question
What type of inheritance pattern?
Pedigrees:
$300 Answer
Sex-Linked Recessive
Pedigrees :
• What type of inheritance pattern?
Pedigrees :
$400 Answer
Autosomal Dominant
Pedigrees :
$500 Question
Use your white board to draw this pedigree. Label all genotypes.
Zack and Kelly have 3 children, a son and two daughters. Their son is color blind.
The youngest daughter marries and also has a son who is color blind.
Pedigrees:
$500 Answer
See board
Vocab:
$100 Question alternative forms of a gene that occurs at the same locus on homologous chromosomes.
Vocab: :
$100 Answer alleles
Vocab: :
$200 Question this occurs when one gene locus masks or modifies the phenotype of a second gene locus
Vocab: :
$200 Answer epistasis
Vocab: :
$300 Question occurs when a single mutant gene affects two or more distinct and seemingly unrelated traits.
Vocab: :
$300 Answer plietropy
Vocab: :
$400 Question
A diagram that traces the inheritance of a trait through generations of a family
Vocab: :
$400 Answer
Pedigree
Vocab: :
$500 Question
These are proteins in the plasma of blood that are responsible for blood type compatibility
Vocab: :
$500 Answer antibodies
FINAL ROUND Question
Tall is dominant over short. Purple is dominant over white. A heterozygous purple, short plant is crossed with a white, heterozygous tall plant.
Complete a dihybrid cross and determine the phenotypic ratio. (must show work)
FINAL ROUND Question
1:1:1:1
ANSWER