Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 2SQ
Which of Mendel’s laws is represented by each statement?
- a. Alleles of each pair of homologous chromosomes separate independently during gamete formation.
- b. Alleles segregate during gamete formation; fertilization creates pairs of alleles once again.
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When Gregor Mendel was working in the mid 1800s, scientists had not yet discovered chromosomes or meiosis. However, we now understand how Mendel's principles are rooted in the events of meiosis. As an example of this, state Mendel's principle of independent assortment and explain how it relates to independent assortment in meiosis.
Suppose a woman with blood type O married a man with blood type AB. What phenotypes and genotypes would you expect to observe in their offspring, and in what proportions? Answer the same question for a heterozygous mother with blood type A and a heterozygous father with blood type B.
Discuss how meiosis and the events in meiosis explain Mendel’s laws. (please keep it short) 5 sentences
Chapter 9 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Ch. 9 - The genetic makeup of an organism is called its...Ch. 9 - Which of Mendels laws is represented by each...Ch. 9 - Prob. 3SQCh. 9 - Prob. 4SQCh. 9 - Prob. 5SQCh. 9 - Prob. 6SQCh. 9 - Prob. 7SQCh. 9 - Prob. 8SQCh. 9 - Prob. 9SQCh. 9 - Prob. 10SQ
Ch. 9 - Prob. 11SQCh. 9 - Prob. 12SQCh. 9 - Incomplete dominance is seen in the inheritance of...Ch. 9 - Why was Henry VIII wrong to blame his wives for...Ch. 9 - Prob. 15SQCh. 9 - Prob. 16SQCh. 9 - Prob. 17SQCh. 9 - Prob. 18IMTCh. 9 - Prob. 19IMTCh. 9 - Prob. 20IMTCh. 9 - Prob. 21PSCh. 9 - Prob. 22PSCh. 9 - Prob. 23BSCh. 9 - Gregor Mendel never saw a gene, yet he concluded...Ch. 9 - Prob. 25BS
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- Name and describe Mendel’s two laws.arrow_forwardAssume that one of Merida's sons, who is heterozygous for orange hair color, married a girl that was also heterozygous. Create a Punnett square to show the possibilities that would result if they had children. a. List the possible genotypes and phenotypes for their children. b. What are the chances of a child with orange hair? c. What are the chantes of a child with yellow?arrow_forwardAccording to Mendel's third postulate, what is the likelihood that each gamete receives one or the other unit factors during gamete formation? 50:50 75:25 25:75 All of the abovearrow_forward
- The pea plants used in Mendel’s genetic inheritance studies were diploid, with 14 chromosomes in somatic cells. Assuming no crossing over events occur, how many unique gametes could one pea plant produce? a. 28 b. 128 c. 196 d. 16,384arrow_forwardin humans brown eyes (B) are dominant over blue (b).A brown eye man marries a blue-eyed woman and they have three children , two of whom are brown eyed and one of whom is blue eyed.Draw the punnett square that illustrate this marrage.what is the man's genotype ? what are the genotype of the children?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
- Match the pattern of inheritance to the appropriate term. A. Heterozygotes with different alleles of the DTL1 gene survive better than homozygotes B. The disease is usually passed from a mother to all children C. Pure-breeding pumpkin plants grown on sandy soil have bigger seeds than plants of the same pure-breeding lineage grown on peaty soil. D. A cross between a true-breeding plant with serrated leaf edges and a true- breeding plant with smooth leaf edges produces an F1 generation with 88% plants with serrated leaves. E. A cross between two heterozygotes, DdFf, produces offspring in three phenotypic groups; Long wings in offspring with genotype D_F_, short wings in offspring with D_ff, and no wings in offspring with the genotypes ddF_ and ddff. F. Individuals homozygous for a mutation in SME have a heightened sense of smell and large earlobes. G. Grey chickens bred together have offspring that are black, grey and white in a 1:2:1 ratio H.Alleles at locus S…arrow_forwardIn humans, having dimpled cheeks is dominant to non-dimpled cheeks. Is it possible that two dimpled adults have a non-dimpled child? Use a Punnett square to explain your answer. If it is possible, what is the probability of this occurring?arrow_forwardSuppose that a woman having normal vision and a man having normal vision have a son who is colorblind.What is the probability that their second child will be a colorblind girl?arrow_forward
- The continuity of life is based on heritable information in the form of DNA. Use the law of segregation and the law of independent assortment to explain how the passage of genes from parents to offspring (as alleles) ensures the perpetuation of parental traits in offspring and genetic variation among offspring. Describe briefly how Mendel demonstrated each of these laws.arrow_forwardThe outcome of Mendel’s law of independent assortment is dependent on how chromosomes are arranged at which phase?arrow_forwardMendel’s observation that two different traits could be inherited independently of each other can be explained by understanding that: During meiosis, the process of chromosome assortment into daughter cells is random Alleles of the genes reside on homologous chromosomes All of the listed choices are correct During meiosis, maternal and paternal members of homologous chromosomes are distributed separately into daughter cellsarrow_forward
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