Vocab Check
This is the physical appearance of a trait.
(What is phenotype?)
Genotype or phenotype? “Tall.”
(What is phenotype?)
Complete the square: Tt × tt. What are the possible offspring genotypes?
(What are Tt and tt?)
In incomplete dominance, red (RR) × white (WW) = pink (RW). What % are pink?
(What is 100%?)
In peas, round (R) is dominant to wrinkled (r), and yellow (Y) is dominant to green (y). If you cross RRYY × rryy, what is the genotype of all offspring?
(What is RrYy?)
Different versions of the same gene are called ____.
(What are alleles?)
Genotype or phenotype? “Tt.”
(What is genotype?)
In a Tt × Tt cross, what is the phenotypic ratio?
(What is 3 tall : 1 short?)
RW × RW cows (roan × roan). What ratio of red : roan : white is produced?
(What is 1 : 2 : 1?)
In the cross RrYy × RrYy, how many boxes will the Punnett square have?
(What is 16?)
Having two of the same alleles (AA or aa) is called ____.
(What is homozygous?)
A parent passes on “T” and another passes on “t.” What is the offspring’s genotype?
(What is Tt?)
In a cross that produces 75% tall and 25% short, what were the parent genotypes?
(What is Tt × Tt?)
When neither allele is completely dominant, the result is ____.
(What is incomplete dominance?)
In peas, round (R) is dominant to wrinkled (r), and yellow (Y) is dominant to green (y). In the cross RrYy × RrYy, what is the expected phenotypic ratio?
(What is 9 round yellow : 3 round green : 3 wrinkled yellow : 1 wrinkled green?)
This allele is hidden when a dominant allele is present.
(What is recessive?)
Is Tt homozygous or heterozygous?
(What is heterozygous?)
If TT = tall and tt = short, what % of Tt offspring will be tall?
(What is 100%?)
In codominance, both alleles show. Give an example.
(What is roan cows, spotted dog, etc.?)
In peas, round (R) is dominant to wrinkled (r), and yellow (Y) is dominant to green (y). Two heterozygous pea plants (RrYy × RrYy) are crossed. What fraction of offspring are expected to be wrinkled and green?
(What is 1/16?)
This is the genetic makeup of an organism, represented by letters.
(What is genotype?)
If T = tall and t = short, what is the phenotype of Tt?
(What is tall?)
A heterozygous tall plant (Tt) is crossed with a homozygous tall plant (TT). What is the genotypic ratio?
(What is 2 TT : 2 Tt?)
This is an example of incomplete dominance. A cross produces 50% red and 50% pink snapdragons. What were the parents’ genotypes?
(What is RR × RW?)
A dihybrid cross RrYy × RrYy produces offspring. What is the probability of getting RrYy exactly?
(What is 4/16 or 1/4?)