Tall (T) pea plants are dominant over short (t) pea plants.  What is the probability of getting 3 tall and 4 short pea plants from a cross between 2 heterozygous tall plants. (report to three nonzero digits.)

In pea plants stem length is either long(dominant)  or short(recessive). 2 heterozygous long pea plants were crossed. The progeny included 402 pea plants, 308 of which were long and 94 of which were short. What is the ratio expected of long and short? 1:1  3:1 9:3:3:1 1:2:1

A. In summer squash, white fruit color (W) is dominant over yellow fruit color (w) and diskshaped fruit (D) is dominant over sphere-shaped fruit (d). If a squash plant true-breeding  for white, disk-shaped fruit is crossed with a plant heterozygous fruit, what will the phenotypic and genotypic ratios be?

student crosses a pure-breeding line of red-flowered poinsettias with a pure-breeding line of white-flowered poinsettias. The student observes that all the pants in the F1 Generation have pink flowers. The student then crosses the F1 plants with one another and records the observations about the plants in the F2 generation. The student will use the F2 data to perform a chi-square goodness of fit test for a model of incomplete dominance. The setup for the student's chi-square goodness of fit test is presented in table 1. a. b. Table 1. A chi-square goodness-of-fit test for incomplete dominance Phenotype Red flowers Pink flowers White flowers Observed 64 107 53 Expected 56 112 56 The critical value for a chi-square test with a significance level of p= 0.05 and 2 degrees of freedom is 5.99. Which of the following statements best completes the student's chi-square test? The calculated chi-square value is 1.53, and the null hypothesis cannot be rejected. The calculated chi-square value is…

Dihybrid and trihybrid Cross Get the genotypic and phenotypic ratio of the following: Dihybrid cross: Harry has 1 pair of dog, he's going to breed his Pure black, furry male to his white furless female (P generation). Also, he wants to find out what will be the result if he breed 2 offspring from F1 generation. Help him to predict the P and G ratio of F1 and F2 generation using the Punnett Square. Dominant Recessive Black White Furry Furless Trihybrid cross: Breed AaBbCc to another AaBbCc.

Two pea plants heterozygous for pod color and pod shape characters are crossed. Draw the punnet square to determine the genotypic and phenotypic ratios of the offspring.

In Persian cats hair length can be short or long. Long hair is a recessive condition and this trait is an example of complete dominance. Assume that you cross two cats heterozygous for this trait and that 8 offspring are produced. What is the probability any 7 of the 8 could have short hair? Write the answer in the form 2!/1!1! * (3/4)^5. Do not write the actual value.

A homozygous round seeded plant is crossed with a homozygous wrinkle seeded plant.  What are the genotypes of the parent plants? ________ x   ________  What percentage of the offspring will be homozygous?

A researcher at ASU is studying the exotic Unicorn Fairy plant. The plant has three genes of interest with the dominant alleles being T-tall, H=hairy leaves and P=purple flowers. The three genes are located in different chromosomes. A trihybrid plant is crossed with a plant that is heterozygous for T and homozygous recessive for the other two genes. What is the probability of getting offspring that is tall, has hairy leaves and white flowers? 9/64 5/8 8/64 O 3/64 O 3/16

In peas, round seeds are dominated to wrinkled seeds. A heterozygous round seeded plant is crossed with a wrinkled seeded plant. What are the genotypic and phenotypic ratios of the F1 generation? Show your Punnett square. What percentage of their offspring can be expected to have round seeds?