BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 12, Problem 1U
What property distinguished Mendel’s investigation from previous studies?
a. Mendel used true-breeding pea plants.
b. Mendel quantified his results.
c. Mendel examined many different traits.
d. Mendel examined the segregation of traits.
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What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?
Select one:
a. There is considerable genetic variation in garden peas.
b.
Genes are composed of DNA.
c. Recessive genes occur more frequently in the F1 generation than do dominant ones.
d.
Traits are inherited in discrete units (genes), and are not the results of "blending."
Which evidence supports Mendel’s law of independent assortment?
A.
In a monohybrid cross, both traits appear in the offspring.
B.
In a monohybrid cross, only the dominant traits appear in the offspring.
C.
In a dihybrid cross, only the dominant traits appear in the offspring.
D.
In a dihybrid cross, all four traits appear in all combinations in the offspring.
If Mendel chose to study inheritance of height in human, would he have likely discovered the same princeple of heredity that he discovered in working with pea plants?
A. Yes, because human height is a continuously varying trait, just like the traits Mendel studied in pea plants.
B. No, because the generation time in humans is relatively long compared with pea plants.
C. Yes, because the principles of segregation and independent assortment also apply to human genes.
D. No, because human height is not genetically determined.
Chapter 12 Solutions
BIOLOGY
Ch. 12.1 - Prob. 1LOCh. 12.1 - Explain the advantages of Mendels experimental...Ch. 12.2 - Evaluate the outcome of a monohybrid cross.Ch. 12.2 - Explain Mendels Principle of Segregation.Ch. 12.2 - Compare the segregation of alleles with the...Ch. 12.3 - Evaluate the outcome of a dihybrid cross.Ch. 12.3 - Explain Mendels Principle of Independent...Ch. 12.3 - Compare the segregation of alleles for different...Ch. 12.4 - Prob. 1LOCh. 12.4 - Prob. 2LO
Ch. 12.5 - Interpret data from testcrosses to infer unknown...Ch. 12.6 - Describe how assumptions in Mendels model result...Ch. 12.6 - Prob. 2LOCh. 12.6 - Explain the genetic basis for observed alterations...Ch. 12 - Inquiry question What confounding problems could...Ch. 12 - Prob. 2IQCh. 12 - Prob. 1DACh. 12 - Prob. 2DACh. 12 - Prob. 3DACh. 12 - What property distinguished Mendels investigation...Ch. 12 - The F1 generation of the monohybrid cross purple...Ch. 12 - The F1 plants from the previous question are...Ch. 12 - In a cross of Aa Bb cc X Aa Bb Cc, what is the...Ch. 12 - An organisms __________ is/are determined by its...Ch. 12 - Phenotypes like height in humans, which show a...Ch. 12 - Japanese four oclocks that are red and tall are...Ch. 12 - If the two genes in the previous question showed...Ch. 12 - What is the probability of obtaining an individual...Ch. 12 - Prob. 4ACh. 12 - Prob. 5ACh. 12 - Mendels model assumes that each trait is...Ch. 12 - z1. Create a Punnett square for the following...Ch. 12 - Explain how the events of meiosis can explain both...Ch. 12 - Prob. 3SCh. 12 - In mammals, a variety of genes affect coat color....
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- which one of Mendel‘s laws states that alleles for each trait are passed on independent of alleles for any other trait? A. law of dominance B. law of segregation C. law of independent assortment D. Mendel did not have any lawsarrow_forwardWhy did Mendel’s work refute the idea of blending inheritance?arrow_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_forward
- Gregor Mendel proposed the law of independent assortment based on the observation that dihybrid crosses of heterozygous individuals produced progeny in a 9:3:3:1 ratio. For this observation to hold, which assumption must be true? A. The traits are governed by genes on different chromosomes. B. The traits are governed by genes on the same chromosome. C. The traits are governed by genes with only two alleles. D. The traits are governed by genes with only three alleles.arrow_forwardWhat is Mendelian inheritance? a. Mendelian genes code an entire phenotype so that children will not be clones of their parents. b. Mendelian genetics are those genes that code for dominant or recessive illnesses but only if no polygenic traits cancel them out. c. Mendelian genes sit at one loci with one allele from Mom and one allele from Dad. d. Mendelian genetics is when two or more genes at two or more loci express one traitarrow_forwardWhat does a bell-shaped curve of a graph indicate? A. Mendelian inheritance pattern B. Incomplete dominance C. Codominance D. Continuous variationarrow_forward
- List Mendel’s conclusions from his experiments. How do the conclusions relate to what is known today in the field of genetics?arrow_forwardMendel performed crosses in which he used pollen from a white-flowered plant to fertilize a purple-flowered plant and pollen from a purple-flowered plant to fertilize a white-flowered plant, showing the same results with both. What did these reciprocal crosses demonstrate? A. That the plants were not sterile. B. That there was no epistasis. C. That the trait could be passed from either parent. D. B and C.arrow_forward[ Choose ] The F1 population produced flowers in a 3:1 ration of dominant to recessive traits. The F2 population produced flowers in a 3:1 ration of dominant to recessive traits. Mendel cross-bred F1 plants with F2 plants. Mendel labeled the offspring of the first plants bred F1, for the first filial generation Mendel crossed two identical, true-breeding plants for a particular characteristic. Mendel cross-bred F1 plants with each other. Mendel crossed two contrasting true-breeding plants with two different traits for a given characteristic. Mendel labeled the offspring of the first plants bred F1, for the first flower generation.arrow_forward
- Why was Mendel’s success dependent on his studying characteristics that exhibit only two easily distinguished phenotypes, such as white versus gray seed coats and round versus wrinkled seeds? Would he have been less successful if he had instead studied traits like seed weight or length of the leaves, which vary much more in their phenotypes? Explain your answer.arrow_forwardWhat is the factor that mendel suggest in his experiment?arrow_forward50 Mendel formulated his Law of Segregation after he had: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a studied F1 offspring b studied F2 offspring C produced mutations identified chromosomesarrow_forward
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