Mendelian Basics
Punnett Squares
Non-Mendelian Genetics
Blood Typing
Potluck
Meiosis and Nondisjunction
Random Genetics
Trivia
100
The physical appearance of a trait.
Phenotype
100
A tool used to predict genetic outcomes.
Punnett Squares
100
When heterozygous traits blend.
Incomplete Dominance
100
The recessive blood type.
Type O
100
Name two polygenic traits.
Skin Color, eye color, height, hair color
100
A cell begins meiosis with 2n = 46 chromosomes.
After meiosis is complete, how many chromosomes are in each gamete?
23
100
Why don’t two siblings (who aren’t identical twins) look exactly the same?
What is independent assortment and random fertilization?
100
What sport is known as “The Beautiful Game”?
Soccer
200
An organism with two identical alleles.
Homozygous
200
Rr × rr results in what percent recessive?
50%
200
When both alleles are fully expressed.
Codominance
200
Type A parent (AO) and Type O parent (OO). Possible blood types?
Type A and Type O
200
Why are males more likely to show X-linked recessive traits?
because they only have one X chromosome
200
During gamete formation, homologous chromosomes fail to separate.
After fertilization with a normal gamete, what chromosomal condition results?
Trisomy
200
A child says, “I got my eye color from my mom.”
Why is this statement genetically incomplete?
What is because traits come from both parents (one allele from each)?
200
What is the only U.S. state that starts with the letter “Q”?
None
300
The law stating alleles separate during gamete formation.
Law of Segregation
300
In a dihybrid cross, how many total boxes are in the Punnett square?
16
300
Pink flowers from red and white parents is an example of?
Incomplete Dominance
300
What Blood type is the person on the lefft?
AB-
300
A trait shows a continuous range from very light to very dark, forming a bell-shaped curve in the population.
What type of inheritance pattern is this?
Polygenic Traits
300
An organism produces four gametes. Two contain 10 chromosomes and two contain 6 chromosomes.
The normal haploid number is 8.
What happened?
nondisjunction
300
Two brown-eyed parents have a blue-eyed child.
How is this possible?
What is both parents were heterozygous (Bb) and passed on recessive alleles?
300
What movie features the quote: “May the Force be with you”?
Star Wars
400
Bb × Bb gives what phenotypic ratio?
3:1
400
What is the classic phenotypic ratio of a dihybrid cross?
9:3:3:1
400
AB blood type is an example of?
Codominance
400
Which blood type has no A or B antigens?
Type O
400
The following blood would have what antigens/proteins present on its cells?
(A and Rh show agglutination (clumping); B does not)
Antigen A and Rh
400
If nondisjunction occurs during the first division of meiosis, what fraction of resulting gametes will be normal?
0%
400
Why are genetic disorders caused by recessive alleles more common in males when they are X-linked?
What is because males only have one X chromosome?
400
What is the most popular ice cream flavor in the United States?
Vanilla
500
If two heterozygous parents cross, what percent offspring are recessive?
25%
500
RrYy × RrYy — what fraction are rr yy?
1/16
500
When more than two alleles exist in a population.
Multiple Alleles
500
AO × B) — what percent chance of Type O?
25%
500
Two parents are both Type AB.
What blood types can their children be?
Type A, Type B and Type AB
500
A mother undergoes nondisjunction and produces one egg with two copies of chromosome 21.
The father’s sperm is normal.
What is the chromosomal makeup of the child?
47 chromosomes (Trisomy 21)
500
A man finds out he is Type O blood. His parents are Type A and Type B.
Is this possible? Explain.
What is yes, if both parents were heterozygous (IAi and IBi) and each passed down the i allele?
500
What planet is known as the “Morning Star”?
Venus