Complete and Incomplete Dominance
In incomplete dominance, what happens when a red flower (RR) and a white flower (WW) are crossed?
The offspring will have pink flowers (RW) as a result of the blending of both colors.
What does it mean when both alleles for a trait are expressed equally in an organism’s phenotype?
Codominance
In a pedigree chart, what does a shaded circle or square represent?
A person who expresses the trait (affected individual).
What does a Punnett square predict?
A Punnett square predicts the possible genotypes and phenotypes of offspring from a particular genetic cross.
What is Mrs. McKee's dogs name?
Kylo
In incomplete dominance, what is the phenotype of the heterozygous individual?
The heterozygous individual shows an intermediate phenotype, a blend of both homozygous traits.
In the case of a flower species where red (R) and white (W) flower colors are codominant, what would the flowers look like in a cross between a red flower (RR) and a white flower (WW)?
The flowers will have red and white patches or stripes, showing both colors equally.
What is the purpose of a pedigree chart?
A pedigree chart is used to track the inheritance of traits over generations.
If a heterozygous tall pea plant (Tt) is crossed with a homozygous recessive short pea plant (tt), what are the possible genotypes of the offspring?
The offspring could be either Tt or tt.
What is Mrs. McKee's husbands name?
Andrew McKee
If a red flower (RR) is crossed with a pink flower (RW), what is the genotype of the offspring?
The possible genotypes are RR and RW.
In a breed of cattle, coat color shows codominance with red (R) and white (W) alleles. If a red cow (RR) is crossed with a white cow (WW), what will the offspring’s coat color be?
The offspring will have a roan coat, with both red and white hairs mixed together (RW).
If a genetic disorder is X-linked, what pattern of inheritance will you see in a pedigree?
Males will be more commonly affected than females.
In a Punnett square, what does the capital letter (T) typically represent?
A dominant allele.
What did Mrs. McKee study in college?
Biomedical Science
Mendel’s pea plant experiments revealed that traits are inherited _____________.
Independently.
In a certain breed of horses, the coat color gene exhibits codominance with a gray (G) allele and a white (W) allele. If a horse with gray fur (GG) is crossed with a horse with white fur (WW), what will the genotype and phenotype of the offspring be?
The offspring will have the genotype GW and will display a gray-and-white mixed or "spotted" coat pattern.
In a pedigree, what genotype is a shaded circle if it is tracking an autosomal recessive trait?
A female that is affected by the recessive trait. Her alleles would be homozygous recessive.
In a cross between two heterozygous pea plants (Tt x Tt), what is the probability that the offspring will be homozygous dominant (TT)?
25%.
What has been Mrs. McKee's favorite chapter that we have studied together so far?
Photosynthesis and Cellular Respiration.