3.1) Use the following symbols to write out the cross:
Male:
Female:
Dark body color: DB
Wild-type body color: whe
Rudimentary wings: Rw
Wild-type wings: waw
3) Dihybrid cross: The dark-bodied and rudimentary winged genes are on two different autosomal
chromosomes. We will use this cross to determine the ratios of phenotypes in the F2 generation
when there are two genes involved. 3.1) Use the following symbols to write out the cross: Male: 2
Female: Dark body color: DB Wild-type body color: wtDB Rudimentary wings: Rw Wild-type wings:
wtRww 3.2) What would the cross look like if we mated a Dark-Bodied/Rudimentary winged
(double mutant) male with a female that is wild type for both traits? Place the sex of the individual
(symbol) on the first set of lines and their respective genotypes in the second set. Sex: Genotypes
3.3) What are the gametes produced by either sex in the parental generation? Place the symbol
for sex on the first set of lines and write down the gametes produced by that sex in the following
set of lines, respectively. Sex: Gametes produced:3.4) Using the gametes that you produced from
the previous question, fill in the Punnet square and show the resulting offspring from the cross.
Place female gametes to the left of the Punnet square and male gametes above. 3.5) What
phenotype should the F1 offspring have? 3.6) What would the F1 cross look like if we mated a
male F1 and a female F1? Place the sex of the individual on the first set of lines and their
respective genotypes in the second set. Sex: Genotypes x 3.7) What are the gametes produced
by either sex in the F1 generation? Place the symbol for sex on the first set of lines and write down
the gametes produced by that sex in the following set of lines, respectively. Sex: Gametes
produced:3.7) What are the gametes produced by either sex in the F1 generation? Place the
symbol for sex on the first set of lines and write down the gametes produced by that sex in the
following set of lines, respectively. Sex: Gametes produced: 3.8) Using the gametes that you
produced from the previous question, fill in the Punnet square and show the resulting offspring
from the cross. Place female gametes to the left of the Punnet square and male gametes above.
3.9) How many different phenotypes would you expect to observe in the F2 generation? List them.
What is the proportion of phenotypes of the F2 generation? Associate the proportion to the
appropriate phenotype..
31 Use the following symbols to write out the cross Male.pdf
1. 3.1) Use the following symbols to write out the cross:
Male:
Female:
Dark body color: DB
Wild-type body color: whe
Rudimentary wings: Rw
Wild-type wings: waw
3) Dihybrid cross: The dark-bodied and rudimentary winged genes are on two different autosomal
chromosomes. We will use this cross to determine the ratios of phenotypes in the F2 generation
when there are two genes involved. 3.1) Use the following symbols to write out the cross: Male: 2
Female: Dark body color: DB Wild-type body color: wtDB Rudimentary wings: Rw Wild-type wings:
wtRww 3.2) What would the cross look like if we mated a Dark-Bodied/Rudimentary winged
(double mutant) male with a female that is wild type for both traits? Place the sex of the individual
(symbol) on the first set of lines and their respective genotypes in the second set. Sex: Genotypes
3.3) What are the gametes produced by either sex in the parental generation? Place the symbol
for sex on the first set of lines and write down the gametes produced by that sex in the following
set of lines, respectively. Sex: Gametes produced:3.4) Using the gametes that you produced from
the previous question, fill in the Punnet square and show the resulting offspring from the cross.
Place female gametes to the left of the Punnet square and male gametes above. 3.5) What
phenotype should the F1 offspring have? 3.6) What would the F1 cross look like if we mated a
male F1 and a female F1? Place the sex of the individual on the first set of lines and their
respective genotypes in the second set. Sex: Genotypes x 3.7) What are the gametes produced
by either sex in the F1 generation? Place the symbol for sex on the first set of lines and write down
the gametes produced by that sex in the following set of lines, respectively. Sex: Gametes
produced:3.7) What are the gametes produced by either sex in the F1 generation? Place the
symbol for sex on the first set of lines and write down the gametes produced by that sex in the
following set of lines, respectively. Sex: Gametes produced: 3.8) Using the gametes that you
produced from the previous question, fill in the Punnet square and show the resulting offspring
from the cross. Place female gametes to the left of the Punnet square and male gametes above.
3.9) How many different phenotypes would you expect to observe in the F2 generation? List them.
What is the proportion of phenotypes of the F2 generation? Associate the proportion to the
appropriate phenotype.
