Suppose Melissa started growing four o'clock plants, Mirabilis jalapa, in her garden. She noticed that the plants have white, green, or patchy white and green (varicgated) leaves. Melissa would like to have only four o'clock plants with variegated leaves, so she crosses a few of her plants to see which crosses produce offspring with variegated leaves. She knows that leaf color is determined by the color of the chloroplasts. For each cross, determine the offspring phenotypes that could be observed. Each cross may produce plants with one or more different phenotypes. Parent crosses Offspring phenotypes .......... white female x white male Answer Bank green female X variegated male green white variegated female x white male variegated variegated female x green male

Suppose Melissa started growing four o'clock plants, Mirabilis jalapa, in her garden. She noticed that the plants have white, green, or patchy white and green (varicgated) leaves. Melissa would like to have only four o'clock plants with variegated leaves, so she crosses a few of her plants to see which crosses produce offspring with variegated leaves. She knows that leaf color is determined by the color of the chloroplasts. For each cross, determine the offspring phenotypes that could be observed. Each cross may produce plants with one or more different phenotypes. Parent crosses Offspring phenotypes .......... white female x white male Answer Bank green female X variegated male green white variegated female x white male variegated variegated female x green male

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Suppose Melissa started growing four o'clock plants, Mirabilis jalapa, in her garden. She noticed that the plants have white, green, or patchy white and green (variegated) leaves. Melissa would like to have only four o'clock plants with variegated leaves, so she crosses a few of her plants to see which crosses produce offspring with variegated leaves. She knows that leaf color is determined by the color of the chloroplasts. For each cross, determine the offspring phenotypes that could be observed. Each cross may produce plants with one or more different phenotypes. Parent crosses Offspring phenotypes green female × green male white female × variegated male variegated female × green male variegated female × white male
During an investigation, two German shepherds with long hair were each bred with a German shepherd with short hair in a first-generation cross. The offspring from each first-generation cross were then bred to produce a second-generation cross. Which questions could be answered using the results of this investigation? Select the three correct answers. O Is hair length in German shepherds a dominant or recessive trait? O How often does the mutation for long hair randomly occur in German shepherds? How does the protein made by the gene for hair length differ among German shepherds? O Is long hair in German shepherds an inherited trait? O What percentage of offspring in the second generation of German shepherds are homozygous for the recessive hair-length trait?
Suppose a plant breeder is interested in growing flowers with white variegated leaves. She reads that the gene controlling the white variegation trait is carried the chloroplast DNA and shows maternal effect. If she combines pollen (sperm) plants with white variegated leaves with ovum (eggs) from plants with green leaw what percentage oi the offspring will have white variegated leaves? a) 0% O b) 25% O C) 50% d) 100%
Vinca (the periwinkle family) have a height determined by polygenes. The shortest Vinca grow to a full height of only 3 inches, whereas the largest Vinca is 21 inches high at maturity. If one crosses a 3-inch Vinca and a 21-inch Vinca, 12-inch Vinca result. If the F1 are allowed to interbreed, then one gets a range of plants from 3 inches to 21 inches high. However, one only obtains about eight plants in 512 that are 3 inches high and only about eight plants in 512 that are 21 inches high. What is the contribution per contributing allele? If two 12-inch (F1) Vincas are crossed, what is the probability of observing a 6-inch Vinca? If a 12-inch F1 plant is crossed to a 21-inch plant, what is the probability of observing a 15-inch plant?
Vinca (the periwinkle family) have a height determined by polygenes. The shortest Vinca grow to a full height of only 3 inches, whereas the largest Vinca is 21 inches high at maturity. If one crosses a 3-inch Vinca and a 21-inch Vinca, 12-inch Vinca result. If the F1 are allowed to interbreed, then one gets a range of plants from 3 inches to 21 inches high. However, one only obtains about eight plants in 512 that are 3 inches high and only about eight plants in 512 that are 21 inches high. How many loci are involved in Vinca height?
In tomatoes, red fruit is dominant over yellow fruit. A plant that is homozygous for red fruit is crossed with a yellow fruit-bearing plant. The cross produced 48 plant offspring. How many plants will bear red tomatoes?
Shakira, after successfully cross-pollinating gerber daisies decides the same process will work with four o'clock flowers. She crosses a purple flowered plant with a white flowered plant and ends up with the following results in the offspring. Why did the four o'clock flower plant give three phenotypes instead 2? 7:26
In peas, yellow pods are dominant to green pods. Show the results of a cross between a pure yellow plant and a hybrid yellow plant.
Perform two consecutive crosses between these two plants, GGHH x gghh, question #11. as in
If a chicken has black and white feathers, how could you describe the genes for feather color? If a plant has yellow flowers and is crossed with a plant with red flowers and the resulting offspring has orange flowers, what can you infer about this plant's genetics?
We have crossed true-breeding flies today. Wild type to mutant. Their phenotypes were wt and vg se. (Let’s not worry about males and females for now, just assume both genes are autosomal, which is normal in a Mendelian experiment). The results of a cross are phenotypes. I will be asking you for numbers or a ratio of phenotype numbers you expect to see in the offspring from this cross. To answer this, you’ll need to start with the genotypes of parents, then write their gametes, then write the offspring genotypes, then get the phenotypes based on them. Predict the results of this cross: In case both mutations are recessive; In case both mutations are dominant; In case vestigial wings are recessive and the sepia eyes are dominant.
Snapdragons occur in nature as either green- or yellow-leaved plants. Suppose that a gardener crosses two yellow-leaved snapdragons, and one-third of the offspring have green leaves while two-thirds of the offspring have yellow leaves. What is the most likely explanation for this outcome? The allele causing yellow leaves is a recessive epistatic allele O The allele causing yellow leaves is carried in the chloroplast genome O The allele causing yellow leaves is a dominant lethal allele The allele causing yellow leaves is a recessive lethal allele