Suppose you have two traits controlled by genes on separate chromosomes. If sexu
ID: 226313 • Letter: S
Question
Suppose you have two traits controlled by genes on separate chromosomes. If sexual reproduction occurs between two, what is the ratio of all possible ? Explain the purpose and the uses of the chi-square test. Suppose students in previous semesters had removed some of the corn kernels from the genetic corn before you counted them. What effect would this have on your results? Assume that one allele is completely dominant over the other for the following questions. (a) Two individuals heterozygous for a single trait have children. What is the expected phenotypic ratio of the possible offspring? _____ (b) Two individuals heterozygous for two traits have children. What would be the expected phenotypic ratio of the possible offspring? _____ (c) Crossing two individuals heterozygous for two traits results in the same phenotypic ratio as for a single trait. Are the genes for these two traits on separate chromosomes or on the same chromosome? Explain your answer. (Remember that the gene for each trait is located at a locus, a Physical region on the chromosome.)Explanation / Answer
(6)Suppose you have two traits controlled by genes on separate chromosomes. If sexual reproduction occurs between two heterozygous parents, what is the genotypic ratio of all possible gametes?
Imagine the alleles as A and B
When two heterozygous parents will go for sexual reproduction, then you will get 1 AB: 1 Ab: 1 aB: 1 ab as possible gametes.
(7)Explain the purpose and uses of the chi-square test
It is one important test we will perform during our research and it helps us to know the difference between what we actually find in our study and what we expect to find.
The formula is Chi square = Sum [(observed frequency - expected frequency)^2/expected frequency)]
The main use of this test comes when we have two categorical variables from a single population and through this test we can determine is there any significant association is existing between the two variables.
(8)Suppose students in previous semesters had removed some of the corn kernels form the genetic corn ears before you counted them. What effect would this have on your results?
Surely it will affect the results, in genetics, the sample size should be maintained large, so that we can have statistically significant results and by analyzing large number of samples, our results and conclusion will be more valid.
Here the removal of few corn kernels will going to have serious effect on the data collection, as the conclusion drawn from the remaining kernels may be misleading if they have removed some phenotypically distinct kernels. When you come to your final results, obviously your results might deviate from usual ratios and you might end up giving wrong results or information.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.