1. Dihybrid crosses involving plants with either white or yellow flower and either tall or short...

1. Dihybrid crosses involving plants with either white or yellow flower and either tall or short morphs were done. The yellow allele is dominant over the white allele, and the tall allele is dominant over the short allele. The following are the observed numbers of each combination. Do these data fit the expected distribution?

TYPE	OBS FREQ	EXP PROP
YELLOW, TALL	90	0.5625
YELLOW, SHORT	52	0.1875
WHITE, TALL	46	0.1875
WHITE, SHORT	24	0.0625

a. what kind of statistical test needs to be performed?

b. Will you need to test for equal variance? If so, what are your results and how does that influence the next steps in your analysis?

c.What are your null and alternative hypotheses?

H0:

HA:

d. Discuss the results of your analysis. Will you accept or reject your null hypothesis? Why? What can you specifically say about the data?

Expert Solution

milcah answered 5 months ago

Dihybrid crosses involving plants with either white or yellow flower and either tall or short morphs...

Dihybrid crosses involving plants with either white or yellow flower and either tall or short morphs were done. The yellow allele is dominant over the while allele, and the tall allele is dominant over the short allele. The following are the observed numbers of each combination. Do these data fit the expected distribution? (3 points) Туре Yellow, Tall Yellow, Short Obs Exp 84 0.5625 54 0.1875 0.1875 White, Tall 40 White, Short 0.0625 22 a) What statistical test will you...

You perform a dihybrid cross of plants. The first trait is flower color. “A” is the...

You perform a dihybrid cross of plants. The first trait is flower color. “A” is the dominant allele and causes red petals and “a” is the recessive allele and causes white petals. Stem length is the second trait. “L” is the dominant allele and causes a long stem and “l” is the recessive allele and causes short stems. You cross a Red Long plant that is heterozygous for both traits with a Red Short plant that is heterozygous for color....

Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant...

Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant to green peas (a). Show a cross between two heterozygous yellow pea plants (Aa x Aa). A a A a What is the genotypic ratio of the offspring? _______ AA : _______ Aa: _________ aa What is the phenotypic ratio of the offspring? _______ Yellow: ________ Green Part B: Using the Chi-square (χ2) analysis 9. In Parent 1 (P1) corn plants, the color purple...

A white, disc-shaped squash crosses with a yellow, sphere-shaped squash and gives 29 white, disc-shaped; 26...

A white, disc-shaped squash crosses with a yellow, sphere-shaped squash and gives 29 white, disc-shaped; 26 white, sphere-shaped; 25 yellow, disc-shaped; and 24 yellow, sphere-shaped. If the white, disc-shaped parent is self-fertilized, what fraction of its offspring will be yellow, sphere-shaped?

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a...

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a true-breeding short pea plant with purple flowers. Your F1 generation looks uniformly tall with purple flowers. The results of the F2 generation counts are shown in the table below: Phenotype Number of progeny Tall/purple flowers 850 Short/purple flowers 350 Short/white flowers 87 Tall/white flowers 313 Your calculated Chi square test statistic for this analysis is: a. 8.31 b. 3.37 c. 4.19 d. 16.3 e....

In garden peas, tall plants are dominant to short plants and smooth seeds are dominant over...

In garden peas, tall plants are dominant to short plants and smooth seeds are dominant over wrinkled seeds. If two heterozygous tall plants with smooth seeds (TtRr) are crossed, what are the potential genotypes and phenotypes that can be expected in the offspring? What is the genotype of the parents? What are the gametes for each parent? What is the phenotypic ratio? What proportion of the Tall plants with smooth seeds is heterozygous for both traits?

According to a theory in genetics, if tall and colorful plants are crossed with short and...

According to a theory in genetics, if tall and colorful plants are crossed with short and colorless plants, four types of plants will result: tall and colorful, tall and colorless, short and colorful, and short and colorless, with corresponding probabilities: 0.37, 0.42, 0.11 and 0.10. ten plants are selected. find the probability that 5 will be tall and colorful, 2 will be tall and colorless, 2 will be short and colorful, and 1 will be short and colorless.

The “P” gene controls flower color in pea plants. A plant with either the PP or...

The “P” gene controls flower color in pea plants. A plant with either the PP or Pp genotype has purple flowers, while a plant with the pp genotype has white flowers. What is the relationship between P and p

Let P = purple flowers and p = white, and T = tall plants and t...

Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What are the genotypes of the gametes that are produced by a plant that is heterozygous for both traits? a. PpTt only b.PT and pt c. P, p, T, and t d. PT, Pt, pT, and pt e. Tt, TT, tt, Pp, PP, and pp

outline the following information on Mendel’s Dihybrid Crosses 1.Previous knowledge that lead to the formation of...

outline the following information on Mendel’s Dihybrid Crosses 1.Previous knowledge that lead to the formation of the hypothesis/question 2.Hypothesis/Question 3.Prediction(s) 4.Experimental Design (test variables, controls, inductive reasoning, deductive reasoning) 5.Results 6.How did the results affect the original hypothesis and/or state of biological knowledge?

Question