Rabbits: Determining phenotypic ratios using double crosses
Not what you're looking for?
In rabbits, one enzyme (the product of a functional gene A) is needed to produce a substance required for hearing. Another enzyme (the product of a functional gene B) is needed to produce another substance required for hearing. The genes responsible for the two enzymes are not linked. Individuals homozygous for either one or both of the nonfunctional recessive allels, a or b, are deaf.
a. If a large number of matings were made between two double heterozygotes, what phenotypic ratio would be expected in the progeny?
b. This phenotypic ratio is a result of what well-known phenomenon?
c. What phenotypic ratio would be expected if the rabbits homozygous recessive for trait A and heterozygous for trait B were mated to rabbits heterzygous for both traits?
Purchase this Solution
Solution Summary
The solution determines the phenotypic ratios using double crosses.
Solution Preview
Here we have a basic double cross between rabbits. As long as they are at least ...
Purchase this Solution
Free BrainMass Quizzes
Infant Development: Sleep
How much do you know about infant sleep? Test your knowledge with this quiz.
Light and Sight Vocabulary
This quiz introduces basic definitions of vocabulary related to light and how human eyes. This information is important for an understanding of sight.
Understanding the Musculoskeletal system
Introduce and understand basic information how the skeletal system and muscular system work in close concert with one another. And how their interaction between muscle and bone, as they work together to allow us movement.
Pregnancy Knowledge
How much do you know about being pregnant? Test your Pregnancy IQ with this quiz!
Identifying Variables in Science Experiments, Part 2
Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.