Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 16, Problem 4TY
Which of Mendel’s laws cannot be observed in a single-factor cross?
- a. segregation
- b. dominance/recessiveness
- c. independent assortment
- d. codominance
- e. All of the above can be observed in a single-factor cross.
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Which of the following in not an extension of Mendel's
A. Codominance
B. Polygonic traits
C. Complete dominance
D. Incomplete dominance
Gregor Mendel noticed that recessive characteristics are "masked" in the F1 generation but reappear in the F2 generation. Which of the following laws best explains this observation?
a.
The law of products
b.
The law of segregation
c.
The law of independent assortment
d.
The law of linked alleles
e.
None of the above
A cross between homozygous purple-flowered and homozygous white-flowered pea plants results in offspring with purple flowers. This demonstrates
Group of answer choices
a. dominance.
b. true-breeding.
c. the mistakes made by Mendel.
d. the blending model of genetics.
e. a dihybrid cross.
Chapter 16 Solutions
Biology
Ch. 16.1 - Prob. 1CCCh. 16.1 - Prob. 2CCCh. 16.1 - Prob. 3CCCh. 16.1 - Prob. 4CCCh. 16.1 - Prob. 5CCCh. 16.1 - Mendels Laws of Inheritance Concept Check: What...Ch. 16.2 - Prob. 1BCCh. 16.2 - Prob. 2BCCh. 16.2 - Prob. 1CCCh. 16.3 - Prob. 1CC
Ch. 16.3 - Prob. 2CCCh. 16.4 - Prob. 1CCCh. 16.4 - Prob. 1EQCh. 16.4 - Prob. 2EQCh. 16.4 - Prob. 3EQCh. 16.5 - Prob. 1CCCh. 16 - Prob. 1TYCh. 16 - During which phase of nuclear division does the...Ch. 16 - Prob. 3TYCh. 16 - Which of Mendels laws cannot be observed in a...Ch. 16 - During a __________blank, an individual with the...Ch. 16 - Prob. 6TYCh. 16 - Prob. 7TYCh. 16 - A hypothetical flowering plant species produces...Ch. 16 - Genes located on a sex chromosome are said to be...Ch. 16 - Prob. 10TYCh. 16 - Prob. 1CQCh. 16 - A cross is made between individuals having the...Ch. 16 - Core Concept: Systems We can view life as a...Ch. 16 - Discuss the principles of the chromosome theory of...Ch. 16 - When examining a human pedigree, what patterns do...
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- In Mendel’s terminology, a “true-breeding” variety of a particular plant: a. Has a homozygous genotype for that trait b. All of the listed choices are correct c. Will have the same phenotype as the parental plant d. Always has offspring with the same phenotype for that traitarrow_forwardMendel used dihybrid crosses to test the idea that alleles for two different characters assort independently. In a typical dihybrid cross (such as RrTt x RrTt), what proportions of phenotypes would be expected in the offspring? Select one: a. 9:3:3:1 b. 4:4:4:4 c. 2:2 d. 3:1 e. 100% dominant phenotypearrow_forwardIn a test cross, peas of an unknown genotype are crossed with peas of a known genotype. In this example, smooth peas are the unknown and wrinkled peas are the known (rr). If half of the offspring from that cross are smooth and half are wrinkled, what is the genotype of the unknown plant? O a. Homozygous dominant: RR O b. Homozygous recessive: rr Oc. Incomplete dominance d. Heterozygous dominant: Rr CLEAR MY CHOICEarrow_forward
- For Mendel's law of segregation requires that a. the genes for the traits he studied must be located on the same chromosome. b. chromosomes be duplicated by mitosis. C. genes are not transmitted independently of each other. d. two alleles at any locus are distributed into separate gametes during meiosis. e. only triploid organisms demonstrate inheritance patterns.arrow_forwardMendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6022 yellow and 2001 green (8023 total). The allele for green seeds has what relationship to the allele for yellow seeds? A. co-dominant. B. dominant C. semi-dominant D. incompletely dominant E. recessivearrow_forwardIf an allele for round seed coats (R) is dominant to an allele for wrinkled (r), what proportion of the progeny will be round in the following cross: Rr x RR? a. 0/4 b. 1/4 c. 2/4 d. 3/4 e. 4/4arrow_forward
- If a true-breeding pea plant with yellow seeds is crossed with a true-breeding pea plant with green seeds, what is the probability that the F1 generation will have green seeds? A. 0% B. 25% C. 75% D. 100% The hereditary units that Mendel called \factors" are known today as A. genes B. traits C. chromosomes D. characteristics In snapdragons, a cross between a red-owering snapdragon and a white-owering snapdragon will produce snapdragons that have pink owers. This is an example of A. complete dominance B. incomplete dominance C. X-linked dominance D. codominance. Which is the genotype of an individual that could be used in a dihybrid cross? A. RRYY B. RRYy C. RrYY D. RrYy Which disorder is a dominant trait? A. hemophilia B. cystic brosis C. Tay-Sachs disease D. Huntington's disease Genetic continuity In a family with three children, what is the probability that the rst child is a boy, the second child is a girl, and the third child is a boy? A. 12:5% B. 25% C. 50% D. 75%arrow_forwardWhich if the following is not among Mendels principles? a. There are factors that is transmitted from parent to offspring? b. There are only two kinds of traits, dominant and recessive c. Genes resides in the chromosome d. Pair of single traits segregate randomlyarrow_forwardWhich of the following is false, regarding the law of segregation? A. It states that each of two alleles for a given trait segregate into different gametes. B. It can be explained by the segregation of sister chromatids during mitosis. C. It can account for the 3:1 ratio seen in the F2 generation of Mendel's crosses. D. It can be used to predict the likelihood of transmission of certain genetic diseases within families.arrow_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_forwardState the conclusions reached by Mendel in his work on the inheritance of characteristics. Explain how each of the following deviates from these conclusions: a. Autosomal linkage b. Sex-linked (X-linked) inheritance c. Polygenic (multiple-gene) inheritancearrow_forwardn each case where Mendel crossed (i.e., mated) two different true-breeding plants as parents, the offspring displayed only one of the two traits seen in the parents. For instance, a cross between a true-breeding “tall” plant and a true-breeding “short” plant produced offspring that were all “tall.” This observation supports which principle of genetics? a. The law of segregation b. The law of independent assortment c. Dominance and recessiveness d. Allele anomaly e. Gene linkagearrow_forward
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