AP Biology Genetics Punnet Square

[cheshmish]

Homework Statement

A shmoo is a hypothetical genetic organism. Suppose you learned that shmoos may have long, oval or round bodies and that matings of shmoos result in the following:
long x oval produced 52 long and 48 oval
long x round produced 99 oval
oval x oval produced 24 long, 53 oval, and 27 round
what hypothesis about the inheritance of shmoo shap would be consistent with these results?

What is the probable genotypes of parents in the following matings:
a checkered brown bird mated with a plain brown bird produced 13 checkered brown and 15 plain brown birds.
checkered brown bird and plain red bird produced 19 checkered red birds.
checkered brown bird and plain red bird produced 9 checkered brown birds, 8 checkered red birds, 7 plain brown birds, and 1 plain red bird.
checkered red bird and plain red bird produced 14 checkered red, 4 checkered brown, 6 plain red, and 5 plain brown birds.
plain red bird adn plain red bird when mater produced 32 plain red and 12 plain brown birds.

Homework Equations

n/a just a punnett square

The Attempt at a Solution

pages and pages of work that gave me nothing.

all help is appreciated!

 

[MedLine]

For the first question, shmoo genetics:

The hypothesis is that there is codominance between long (LL) and Round (RR)

1.) << complete solution deleted by berkeman >>

The squares illustrate incomplete dominance of the two alleles and the oval shmoos have a genotype of LR or RL; making them an oval hybrid.

Medline

 

[berkeman]

Please do not post complete solutions, MedLine. We do not give out answers here on the PF to homework/coursework questions. Please offer tutorial help instead.