Traits
Punnett Squares
Pedigrees
Complex Inheritance
Random
100
Diagram showing the gene combinations that might result from a genetic cross
Punnett Square
100
What is the genotype AND phenotype of the chickens in the left 2 squares of the Punnett Square?
Genotype - Bb
Phenotype - Blue
100
If a trait doesn't appear in Generations I and II but appears in Generation III, is the trait recessive or dominant?
Recessive
100
In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red (R) and white (W). The heterozygous phenotype is pink.
A pink-flowered plant is crossed with a white flowered plant. What is the probability of producing a pink-colored plant?
50%
(50% white)
100
Create an example of incomplete dominance.
Answers will vary... traits must be MIXED/BLENDED
200
A trait that is stronger than another trait. The trait will always appear if present.
Dominant Trait
200
In dogs, straight ears are dominant to floppy ears. Two dogs that are both heterozygous for ear shape mate. What are the genotype percentages?
25% homozygous dominant
50% heterozygous
25% homozygous recessive
200
(2).webp)
How many males?
How many females?
How many people have the trait?
16 males
18 females
10 people have the trait
200
Create an example of codominance.
Answers vary.
Answer should be something that shows BOTH traits.
200
Two traits are crossed: Aa and Ff.
What are the genotypes that a child could receive from their parents?
AF, Af, aF, or af
300
If an offspring has two alleles that are the same, it is
Homozygous
300
Green seeds are dominant to yellow seeds. Create a Punnett square showing a cross between a homozygous dominant green seeded plant and a yellow seeded plant. What are the genotype percentages?
100% heterozygous
300
The pedigree above tracks the presence of attached earlobes through a family's generations. Having attached earlobes is an autosomal recessive trait.
What is the genotype of individual II-3?
Ee (Heterozygous)
300
In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette (black and white spotted).
What are the genotype percentages if two Heterozygous chickens were crossed?
25% BB
50% BW
25% WW
300
What are all the Genotype possibilities if Bb and Rr were crossed?
BR, Br, bR, br
400
Different forms of a gene which are shown as a capital or lowercase letter
Allele
400
Based on the Punnett Square, what are the possible genotypes of the offspring?
Bb and bb
400
The pedigree above tracks the presence of attached earlobes through a family's generations. Having attached earlobes is an autosomal recessive trait.
If individuals I-1 and I-2 had a fourth child, what is the chance that the child would have attached earlobes?
50%
400
In humans, hair texture follows an incomplete dominance pattern. If a curly haired woman (HH) and a straight haired man (SS) had a baby, what would their phenotype AND genotype look like?
100% HS (Heterozygous)
Wavy hair
400
What are two ways we get genetic variation (think back to last unit and this unit)
Crossing over AND segregation of alleles
500
The color of someone's hair, eyes, skin is an example of
Phenotype
500
How would two parents who have brown hair (dominant) create a blonde hair (recessive) child?
They both carry the recessive allele.
500
How is I-1 related to IV-1?
Great-Grandfather/Great-Grandson
500
How do we produce a child with blood type O?
Two recessive alleles (ii)
500
Be passed on the every body cell that develops from the gamete.