When interbreeding two strains of roses, we expect the hybrid to appear in three genetic classes...

When interbreeding two strains of roses, we expect the hybrid to appear in three genetic classes in the ratio 1:3:4. If the results of an experiment yield 74 hybrids of the first type, 345 of the second type, and 379 of the third type, do we have sufficient evidence to reject the hypothesized genetic ratio at the .05 level of significance? (a) Find the test statistic. (Give your answer correct to two decimal places.) (ii) Find the p-value. (Give your answer bounds exactly.)

Expert Solution

observed frequencey, O	expected proportion	expected frequency,E	(O-E)²/E
74	0.125	99.75	6.647
345	0.375	299.25	6.994
379	0.500	399.00	1.003

chi square test statistic,X² = Σ(O-E)²/E =   14.64

level of significance, α=   0.05
Degree of freedom=k-1=   3   -   1   =   2

P value =   0.0007
Decision: P value < α, Reject Ho

so, these are not according to expexted ratio

.................

Please revert back in case of any doubt.

Please upvote. Thanks in advance.

orchestra answered 2 years ago

What ratios result when three genetic traits are analyzed together in a hybrid cross?

Hybrid usually refers to animals or plants resulting from a cross between two races, breeds, strains,...

Hybrid usually refers to animals or plants resulting from a cross between two races, breeds, strains, or varieties of the same species. Using ONE (1) specific hybrid animal that are actually exist in the world, explain in details how this hybrid animal is formed. Your explanation should include the parents involved, compare their characteristics to their parents, their respective genetic components, barriers involved to get the hybrid animal and ways to get the hybrid animal. The details of the summary...

A certain genetic characteristic of a particular plant can appear in one of three forms...

A certain genetic characteristic of a particular plant can appear in one of three forms (phenotypes). A researcher has developed a theory, according to which the hypothesized proportions are p1 = 0.25, p2 = 0.50, and p3 = 0.25. A random sample of 200 plants yields X2 = 4.88. (a) Carry out a test of the null hypothesis that the theory is correct, using level of significance α = 0.05. (Use technology. Round your answer to four decimal places.)...

A certain genetic characteristic of a particular plant can appear in one of three forms (phenotypes)....

A certain genetic characteristic of a particular plant can appear in one of three forms (phenotypes). A researcher has developed a theory, according to which the hypothesized proportions are p1 = 0.25, p2 = 0.50, and p3 = 0.25. A random sample of 200 plants yields X2 = 4.88. (a) Carry out a test of the null hypothesis that the theory is correct, using level of significance α = 0.05. (Use technology. Round your answer to four decimal places.) P-value...

When doing statistical inference, we check three broad classes of assumptions: (1) randomization, (2) independence, and...

When doing statistical inference, we check three broad classes of assumptions: (1) randomization, (2) independence, and (3) normality of the sampling distribution. What is the consequence of violating these assumptions? (1) biased sample statistics, (2) invalid inference, (3) invalid inference (1) invalid inference, (2) biased sample statistics, (3) invalid inference (1) invalid inference, (2) invalid inference, (3) biased sample statistics (1) biased sample statistics, (2) biased sample statistics, (3) invalid inference (1) biased sample statistics, (2) invalid inference, (3) biased...

Find the probability that the totals 5 and 9 both appear before two 7s appear when...

Find the probability that the totals 5 and 9 both appear before two 7s appear when rolling a pair of dice repeatedly. The correct answer is 0.463673.

You have sequenced the genomes of males of two fruitfly strains. When comparing the sequences of...

You have sequenced the genomes of males of two fruitfly strains. When comparing the sequences of genes, you found that strain #1 has a gene that’s not present in strain #2. What would you need to do to identify the function of this novel gene? randomly mutagenize the fly embryos of both strains use RNAi to silence the gene in strain #1 and observe the phenotype fuse the gene in strain #1 with GFP and observe the embryo perform a...

1. Identify the three classes of noninfluential and two classes of influential investments in securities. 2....

1. Identify the three classes of noninfluential and two classes of influential investments in securities. 2. Under that conditions should investments be classified as current assets? As long-term assets? 3. for investments in available-for-sale securities, how are unrealized holding gains and losses reported?

1. You have sequenced the genomes of males of two fruitfly strains. When comparing the sequences...

1. You have sequenced the genomes of males of two fruitfly strains. When comparing the sequences of genes, you found that strain #1 has a gene that’s not present in strain #2. What would you need to do to identify the function of this novel gene? randomly mutagenize the fly embryos of both strains perform a forward genetic screen in both strains use RNAi to silence the gene in strain #1 and observe the phenotype fuse the gene in strain...

In C++ In this lab we will creating two linked list classes: one that is a...

In C++ In this lab we will creating two linked list classes: one that is a singly linked list, and another that is a doubly linked list ( This will be good practice for your next homework assignment where you will build your own string class using arrays and linked list ) . These LinkedList classes should both be generic classes. and should contain the following methods: Print Add - Adds element to the end of the linked list. IsEmpty...

Question