What Hypothesis About Shmoo Inheritance Explains These Results?

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SUMMARY

The discussion centers on the genetic inheritance patterns of hypothetical organisms called shmoos, specifically focusing on their body shapes: long, oval, and round. The results from various matings suggest a hypothesis of codominance between long (LL) and round (RR) alleles, with oval shmoos represented by the genotype LR or RL. The analysis employs Punnett squares to illustrate the inheritance patterns, indicating incomplete dominance among the alleles. Participants emphasize the importance of providing tutorial help rather than complete solutions to homework questions.

PREREQUISITES
  • Understanding of basic genetic concepts, including alleles and genotypes.
  • Familiarity with Punnett squares for predicting genetic outcomes.
  • Knowledge of codominance and incomplete dominance in genetics.
  • Basic principles of inheritance patterns in organisms.
NEXT STEPS
  • Research the principles of codominance and incomplete dominance in genetics.
  • Study how to construct and interpret Punnett squares for various genetic crosses.
  • Explore real-world examples of inheritance patterns in organisms.
  • Learn about the implications of genetic variation in breeding and conservation biology.
USEFUL FOR

This discussion is beneficial for students studying genetics, educators teaching genetic concepts, and anyone interested in understanding inheritance patterns in hypothetical or real organisms.

cheshmish
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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!
 
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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
 
Last edited by a moderator:
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.
 

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