Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 4SQ
Offspring of a cross AA × aa are ______.
- a. all AA
- b. all aa
- c. all Aa
- d. 1/2 AA and 1/2 aa
- e. none of the above
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Students have asked these similar questions
The F2 offspring of a monohybrid cross would show the genotype(s)
A) Aa and aa. B)AA, Aa and aaC) AA onlyD)Aa onlyE) AA and Aa
In Mendels breeding experiment on garden pea, the offspring of F2 generation are obtained in the ratio of 25% pure yellow pod, 50% hybrid green pods and 25% green pods State (i) which pod colour is dominant (ii) The Phenotypes of the individuals of F1generation. (iii) Workout the cross.
A testcross with a homozygous dominant genotype should lead to progeny that:
a.
All have a homozygous dominant genotype
b.
All exhibit a recessive phenotype
c.
All exhibit a dominant phenotype
d.
All die, since exclusively homozygous recessive progeny are made
e.
Have a 3:1 dominant to recessive phenotype
Chapter 19 Solutions
Human Biology (MindTap Course List)
Ch. 19 - Define the difference between (a) gene and allele,...Ch. 19 - Prob. 2RQCh. 19 - What is probability, and how is it applied in...Ch. 19 - What is independent assortment? Does independent...Ch. 19 - Alleles are ___________. a. alternate forms of a...Ch. 19 - A heterozygote has _____. a. only one of the...Ch. 19 - Prob. 3SQCh. 19 - Offspring of a cross AA aa are ______. a. all AA...Ch. 19 - Prob. 5SQCh. 19 - Prob. 6SQ
Ch. 19 - Which statement best fits the principle of...Ch. 19 - Prob. 8SQCh. 19 - Prob. 9SQCh. 19 - Prob. 10SQCh. 19 - One gene has alleles A and a. Another has alleles...Ch. 19 - Still referring to Problem 1, what will be the...Ch. 19 - Go back to Problem 1, and assume you now study a...Ch. 19 - The young woman shown at right has albinismvery...Ch. 19 - When you decide to breed your Labrador retriever...Ch. 19 - The ABO blood system has been used to settle cases...Ch. 19 - Prob. 7CTCh. 19 - A man is homozygous dominant for ten different...Ch. 19 - Prob. 9CTCh. 19 - Bill and Marie each have flat feet, long...Ch. 19 - You decide to breed a pair of guinea pigs, one...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A dog breeder liked yellow and brown Labrador retrievers. In an attempt to produce yellow and brown puppies, he mated a yellow Labrador male and a brown Labrador female. Unfortunately, all the puppies produced in this cross were black. a. Explain this result. b. How might the breeder go about producing yellow and brown Labradors?arrow_forwardA) You cross a plant with genotype AaBbDd to a plant with genotype aaBbDd. What is the probability of an offspring with genotype AaBBD_ or genotype aaB_Dd? Show your work. B)Explain how Mendel’s Law of Segregation affected the way you solved partA.arrow_forwardMendel’s crossing of round-seeded pea plants with wrinkled-seeded pea plants resulted in progeny that all had round seeds. This indicates that the wrinkled-seed trait is Select one: a. rare b. abnormal c. dominant d. codominant e. recessivearrow_forward
- You have a pure breeding line of tall corn and a purebreeding line of short corn. When you cross them what do you expect the phenotype of the F1 to be? Group of answer choices A. impossible to tell with the information given B. all medium height C. 3/4 tall and 1/4 short D. all short E. all tallarrow_forwardThe normal color of snapdragons is red. Some pure linesshowing variations of flower color have been found.When these pure lines were crossed, they gave the following results (see the table):a. Explain the inheritance of these colors.b. Write the genotypes of the parents, the F1, and theF2.arrow_forwardDetached earlobes (D) are dominant to attached earlobes (d). A heterozygous person is crossed with a homozygous recessive person. Which of the following correctly describes this cross? A. DD x DD B. DD x Dd C. Dd x Dd D. Dd x ddarrow_forward
- You cross a YyTtRrSs to a YyTtRrSs. What percentage of offsprings will be YYTtRrSSarrow_forwardA woman who is heterozygous, Bb, has brown eyes; B (brown) isthe dominant allele, and b (blue) is recessive. One of her eyes,however, has a patch of blue color. Give three different explanationsfor how this might have occurred?arrow_forwardHaving dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no dimples and whose mother did have dimples) marries a man whose mother had no dimples, whose father had no dimples, and whose grandparents on his father’s side did have dimples! a)What are the genotypes of the man and woman? b) Show the cross. c)How many different genotypes are possible among the offspring? d)How many different phenotypes are possible among the offspring? e)What is the probability of getting DD offspring? f) What is the probability of getting dd offspring? g) What is the probability of getting dimpled offspring? h) What is the probability of getting offspring with no dimples? i)What is the probability of getting homozygous offspring?arrow_forward
- You cross a black dog which is homozygous dominant for two genes B and E (B determines pigment production and E determines deposition of pigment) with a yellow dog homozygous recessive for both genes and then intercross the F1, you obtain a progeny in the ratio of 9 (black) : 3 (brown) :4 (yellow). Explain the results (specially why you don't get the usual 9:3:3:1 ratio)arrow_forwardA dog breeder liked yellow and brown Labrador retrievers. In an attempt to produce yellow and brown puppies, he mated a yellow Labrador male and a brown Labrador female. Unfortunately, all the puppies produced in this cross were black. Q. Explain this result.arrow_forwardImagine a test cross of an unknown individual that results in all 1000 offspring being homozygous recessive for the two traits in question. What is the genotype of the unknown?A) Homozygous dominant for both genes. B) Homozygous dominant for one gene and homozygous recessive for the other.C) Heterozygous for both genes.D) Heterozygous for one gene and homozygous recessive for the other.E) This scenario cannot exist.arrow_forward
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