Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 12, Problem 7RQ
Imagine you are performing a cross involving seed color in garden pea plants. What Fi offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.
- 100 percent yellow-green seeds
- 100 percent yellow seeds
- 50 percent yellow, 50 percent green seeds
- 25 percent green, 75 percent yellow seeds
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Imagine you are Performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.
Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green. a. 100 percent yellow-green seeds b. 100 percent yellow seeds c. 50 percent yellow, 50 percent green seeds d. 25 percent green, 75 percent yellow seeds
Imagine you are performing a cross involving gerden pea plants. What F1 offspring would you expect if you cross plants with green seedsand plants that are homozygous for the yellow seed colo allele? -yellow seed is dominant over green
100 percent yellow - green sedds
100 percent yellow seeds
50 percent yellow, 50 percent green seeds
25 percent green, 75 percent yellow seeds
Chapter 12 Solutions
Biology 2e
Ch. 12 - Figure 12.5 In pea plants, round peas (R) are...Ch. 12 - Figure 12.6 What are the genotypes of the...Ch. 12 - Figure 12.12 What ratio of offspring would result...Ch. 12 - Figure 12.16 In pea plants, purple flowers (P) are...Ch. 12 - Mendel performed hybridizations by transferring...Ch. 12 - Which is one of the seven characteristics that...Ch. 12 - Imagine you are performing a cross involving seed...Ch. 12 - Consider a cross to investigate the pea pod...Ch. 12 - A scientist pollinates a true-breeding pea plant...Ch. 12 - The observable traits expressed by an organism are...
Ch. 12 - A recessive trait will be observed in individuals...Ch. 12 - If black and white true-breeding mice are mated...Ch. 12 - The ABO blood groups in humans are expressed as...Ch. 12 - In a mating between two individuals that are...Ch. 12 - If the allele encoding polydactyly (six fingers)...Ch. 12 - A farmer raises black and white chickens. To his...Ch. 12 - Assuming no gene linkage, in a dihybrid cross of...Ch. 12 - The forked line and probability methods make use...Ch. 12 - How many different offspring genotypes are...Ch. 12 - Labrador retriever's fur color is controlled by...Ch. 12 - Which of the following situations does not follow...Ch. 12 - Describe one of the reasons why the garden pea was...Ch. 12 - How would you perform a reciprocal cross for the...Ch. 12 - Mendel performs a cross using a true-breeding pea...Ch. 12 - Calculate the probability of selecting a heart or...Ch. 12 - The gene for flower position in pea plants exists...Ch. 12 - Use a Punnett square to predict the offspring in a...Ch. 12 - Can a human male be a carrier of red-green color...Ch. 12 - Why is it more efficient to perform a test cross...Ch. 12 - Use the probability method to calculate the...Ch. 12 - Explain epistatis in terms of its Greek-language...Ch. 12 - In Section 12.3, ''Laws of Inheritance," an...Ch. 12 - People with trisomy 21 develop Down’s syndrome....Ch. 12 - A heterozygous pea plant produces violet flowers...
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- Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?arrow_forwardMore Crosses with Pea Plants: The Principle of Independent Assortment Consider the following cross: P1: AABBCCDDEE aabbccddee F1: AaBbCcDdEe (self-cross to get F2) What is the chance of getting an AaBBccDdee individual in the F2 generation?arrow_forwardYou want to determine whether genes a and b are linked. What cross would you use and why? How would this cross tell you if they are linked?arrow_forward
- Figure 8.9 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross between a pea plant with wrinkled peas (genotype rr) and a plant of unknown genotype that has round peas. You end up with three plants, all which have round peas. From this data, can you tell if the parent plant is homozygous dominant or heterozygous?arrow_forwardImagine that you are performing a cross involving seed color in garden pea plants. What traits would you expect to observe in the F1 offspring if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.a. only yellow-green seedsb. only yellow seedsc. 1:1 yellow seeds:green seedsd. 1:3 green seeds:yellow seedsarrow_forwardTwo sweat-pea plants, one with purple flowers and one with white flowers are crossed. This results in a 3:1 ratio of white:purple flowers. What were the genotypes of the parents? (Remember that flower color in sweet pea is an example of complementation)arrow_forward
- Two plants, both heterozygous for the gene that controls flower color are crossed. What percentage of the offspring will have purple flowers? ______What percentage will have white flowers?arrow_forwardIn pea plants, yellow seed color is dominant to green seed color. If a heterozygous pea plant is crossed with a plant that is homozygous recessive for seed color, what is the probability that the offspring will have green seeds? A)75%B)50%C)25%D)100%arrow_forwardIn rabbits, black fur (F) is dominant to white fur (f). You decide to cross a rabbit that is homozygous dominant for fur color with a rabbit that is heterozygous for fur color. Set up a Punnett Square for this cross and then answer the following questions. What percentage of offspring will have the FF phenotype?What percentage of offspring will have the ff phenotype?What percentage of offspring will have the Ff phenotype?arrow_forward
- You cross a pea plant with the genotype AaBbCcDd with a pea plant that is AABbCCdd. What is the probability that you get an offspring with the genotype AaB_C_dd?arrow_forwardPink flower color is the result of an incompletely dominant gene in snapdragons, with red the dominant, and white, the recessive. If you cross two pink flowers, what percentage of pink flowers would you expect to see in the offspring? ____ % (just write numeral, no % sign)arrow_forward. In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring?arrow_forward
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