WorksheetsDihybrid cross steps
Total questions: 18
Worksheet time: 9mins
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What do you do first to determine to possible offspring's?)
Foil the genotypes of the parents to get the gametes.
Use the genotypes to fill out the Dihybrid cross
The gametes are just the parent genotypes doubled
The dominant traits will mean that all the gametes will be dominant.
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What does the "F" in Foil stand for?)
Free genotype of parents
Combine the first letter of both the alleles of the parents.
First letter in alphabet of the parents that
Final letters of the genotypes of the parents.
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What does the "O" in Foil stand for?)
Onset genotype of parents
Outer letters of the alphabet.
Outside letters of the gametes
Combine the outside letters of both the parent alleles.
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What does the "I" in Foil stand for?)
interesting genotype of parents
Inner most letters of the alphabet.
inside letters of the gametes
Combine the inside letters of both the parent alleles.
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What does the "L" in Foil stand for?)
Large genotype of parents
Last letters of the alphabet.
Combine the last letters of both the parent alleles.
last letters of the gametes
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What are the gametes of both of the parents?
Ea, ea, ea, EA
EA, Ea, eA, ea
ea, ea, eA, eA
eA, eA, EA, EA
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What is the missing gamete for parent 1?
eA
ea
EA
Ea
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What is the missing gamete for parent 2?
eA
ea
EA
Ea
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the genotype be for the box with the "?" ?
EEAa
EeAa
eeAa
eeaa
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the genotype be for the box with the "?" ?
EEAa
EeAa
eeAa
eeaa
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the phenotype be for the box with the "?" ?
Yellow & Smooth
Green & Wrinkled
Green & Smooth
Yellow & Wrinkled
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the phenotype be for the box with the "?" ?
Yellow & Smooth
Green & Wrinkled
Green & Smooth
Yellow & Wrinkled
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
Which color/genotype is NOT correct?
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
Which color/genotype is NOT correct?
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
How many offspring will be Wrinkled & Yellow?
4
3
1
9
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
How many offspring will be Wrinkled & Yellow?
4
3
1
9
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
How many offspring will be Wrinkled & Yellow?
4
3
1
9
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
How many offspring will be smooth & Yellow?
4
3
1
9
