Question

A dihybrid cross potentially featuring Dominant epistasis is performed- the observed results for 3 phenotypes are...

  1. A dihybrid cross potentially featuring Dominant epistasis is performed- the observed results for 3 phenotypes are 255, 50, and 15. Test a 12:3:1 ratio and calculate the chi square value given a p-value of 0.05 (Round to 4 decimal places)

Homework Answers

Answer #1

Hope this will help you☺

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a test cross between a dihybrid exhibiting two dominant phenotypes (AaBb) and a double homozygous...
In a test cross between a dihybrid exhibiting two dominant phenotypes (AaBb) and a double homozygous recessive (aabb), we obtain progeny that shows a higher ratio of phenotypes that combine a dominant phenotype for one character and the recessive for the other (e.g. A_bb), and viceversa. What is the likely explanation ? Group of answer choices the alleles in the heterozygous parent are in coupling configuration. double crossovers likely occurred between the A and B loci. the alleles in the...
You performed a dihybrid test cross between flies that were heterozygous for both traits and flies...
You performed a dihybrid test cross between flies that were heterozygous for both traits and flies that were homozygous recessive for both traits. The results showed some variation from the predicted 1:1:1:1 phenotypic ratio, but the P value was determined to be .25 (insignificant)or good fit. What can you conclude about these two genes that are responsible for the observed traits and why?   (Hint: law of independent assortment is being tested)
The F2 generation from a dihybrid cross produced a total of 219 tall plants with purple...
The F2 generation from a dihybrid cross produced a total of 219 tall plants with purple flowers, 72 dwarf plants with purple flowers, 69 tall plants with pink flowers, and 31 dwarf plants with pink flowers. 1: please state your hypothesis and explain how you arrived at this prediction 2: phenotype observe expected Purple, tall Purple, dwarf Pink, tall Pink, dwarf total number of plants in F2 generation 3: What is the chi-square value between the observed and expected offspring...
You perform a dihybrid cross in fruit flies using one dominant mutant (VanGogh, which has a...
You perform a dihybrid cross in fruit flies using one dominant mutant (VanGogh, which has a unique swirl in the wing bristle pattern) and one recessive mutant (sepia, which have bright red eyes instead of the typical brick red) and find the following results in the F2. Normal eyes, VanGogh wings - 1011; Normal eyes, normal wings - 334; sepia eyes, VanGogh wings - 359; sepia eyes, normal wings - 120. Calculate expected results based on the prediction that Mendel's...
You cross two individual striped mice multiple times. The resulting F1 generation offspring all have striped...
You cross two individual striped mice multiple times. The resulting F1 generation offspring all have striped coats. You cross F1 mice multiple times and observe the following phenotypes among the F2 offspring: 145 striped mice, 37 spotted mice, 13 mice with no patterns. From these observations you suspect that coat patterning is under the control of two bi-allelic genes experiencing dominant epistasis. Answer the questions below (Q 1-3) and use a Chi-square test to support or reject your hypothesis, then...
The categories of a categorical variable are given along with the observed counts from a sample....
The categories of a categorical variable are given along with the observed counts from a sample. The expected counts from a null hypothesis are given in parentheses. Compute the χ2-test statistic, and use the χ2-distribution to find the p-value of the test. Category A B C D Observed    (Expected) 25(20) 35(40) 50(60) 90(80) Round your answer for the chi-square statistic to two decimal places, and your answer for the p-value to four decimal places. chi-square statistic = Enter your...
In the California poppy, an allele for yellow flowers (C) is dominant over an allele for...
In the California poppy, an allele for yellow flowers (C) is dominant over an allele for white flowers (c).At an independently assorting locus, an allele for entire petals (F) is dominant over an allele for fringed petals (f). A plant that is homozygous for yellow and entire petals is crossed with a plant that is white and fringed. The F1 progeny were then test crossed and the following progeny were produced: 54 yellow and entire, 58 yellow and fringed, 53...
One common application for the chi-square test is a genetic cross. In this case, the statistical...
One common application for the chi-square test is a genetic cross. In this case, the statistical null hypothesis is that the observed results from the cross are the same as those expected, for example, the 3:1 ratio or 1:2:1 ratio for a Mendelian trait. Dr. William Cresko, a researcher at the University of Oregon, conducted several crosses between marine stickleback fish and freshwater stickleback fish. All marine stickleback fish have spines that protrude from the pelvis, which presumably serve as...
In monkeyflower, an allele for yellow flowers (Y) is dominant over an allele for white flowers...
In monkeyflower, an allele for yellow flowers (Y) is dominant over an allele for white flowers (y). At an independently assorting locus, an allele for entire petals (E) is dominant over an allele for fringed petals (e). A plant that is homozygous for yellow and entire petals is crossed with a plant that is white and fringed. A resulting F1 plant is then crossed with a plant that is white and fringed, and the following progeny are produced: 20 yellow...
A multinomial experiment produced the following results: (You may find it useful to reference the appropriate...
A multinomial experiment produced the following results: (You may find it useful to reference the appropriate table: chi-square table or F table) Category 1 2 3 4 5 Frequency 57 63 70 55 55 a. Choose the appropriate alternative hypothesis to test if the population proportions differ. All population proportions differ from 0.20. Not all population proportions are equal to 0.20. b. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final...