Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 3, Problem 25QP
Meiosis Explains Mendel’s Results: Genes Are on Chromosomes
Define the following pedigree symbols:
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Mendel's Law of Independent Assortment states that:
the members of a pair of homologous chromosemes assort independently of each other during gamete formation
none of these
the members of a pair of homologous chromosomes separate from each other during gamete formati
different pairs of homologous chromosomes assort independently of each other during gamete formation
different pairs of homologous chromosomes separate from each other during gamete formation
The gene for nose shape is found on the X chromosome. Round nose is dominant to pointed nose.
Human individuals with XXY (an additional X chromosome) are male. Individuals with XO (only one X chromosome) are female. For the following family, identify the possible nondisjunction events (rare mistakes during meiosis) that could explain the phenotype of the child.
A man with a pointed nose and a woman with a round nose have a daughter with a round nose. This daughter has Turner Syndrome (genotype XO: one X chromosome).
Nondisjunction must have occurred in melosis 2 of the mother
More than one of the answers is correct
Nondisjunction must have occurred in meiosis 1 of the father
Nondisjunction must have occurred in meiosis 1 of the mother
Nondisjunction must have occurred in meiosis 2 of the father
A color-blind woman with Turner syndrome (XO) has a father who is color blind.Given that the gene for the color-blind condition is recessive and X-linked, provide a likely explanation for the origin of the color-blind and chromosome constitution in the color-blind woman.
nondisjunction in the mother in meiosis I or II
nondisjunction in the father at meiosis I
no abnormalities had to occur to produce this daughter
nondisjunction in the father in meiosis I or II
nondisjunction in both the mother and father in meiosis I.
Chapter 3 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 3.4 - Why do scientists design experiments to disprove...Ch. 3.4 - Should Ockhams razor be considered an irrefutable...Ch. 3.7 - Prob. 1EGCh. 3.7 - For most cases, a p value of 0.05 is used to...Ch. 3 - Prob. 1CSCh. 3 - Prob. 2CSCh. 3 - Prob. 3CSCh. 3 - Prob. 1QPCh. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Crossing Pea Plants: Mendels Study of Single...
Ch. 3 - Prob. 4QPCh. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Prob. 6QPCh. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - Crossing Pea Plants: Mendels Study of Single...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - Prob. 14QPCh. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - Prob. 17QPCh. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - More Crosses with Pea Plants: The Principle of...Ch. 3 - Meiosis Explains Mendels Results: Genes Are on...Ch. 3 - Meiosis Explains Mendels Results: Genes Are on...Ch. 3 - Meiosis Explains Mendels Results: Genes Are on...Ch. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Variations on a Theme by Mendel A characteristic...Ch. 3 - Prob. 29QPCh. 3 - Variations on a Theme by Mendel Pea plants usually...Ch. 3 - Prob. 31QPCh. 3 - Prob. 32QPCh. 3 - Prob. 33QPCh. 3 - Prob. 34QPCh. 3 - Prob. 35QPCh. 3 - Prob. 36QP
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- What is independent assortment? Does independent assortment occur during mitosis or during meiosis?arrow_forwardGenes on the same chromosome tend to stay together during _____ and end up in the same ______. a. mitosis; body cell b. mitosis; gamete c. meiosis; body cell d. meiosis; gamete e. both a and darrow_forwardDescribe the chromosomal alterations and phenotype of cri du chat syndrome and Prader-Willi syndrome.arrow_forward
- Human sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele? c. If a female is heterozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele?arrow_forwardWhen 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.arrow_forwardIn the cross between a female AaBbccDdee and male AabbCcDdee, what proportion of the progeny are expected to be phenotypically identical to the female parent?arrow_forward
- In Drosophila, the white gene located on the X chromosome affects eye color; an autosomal gene, wingless, is on an autosomal chromosome. Use the following allele symbols: Xw+ _ , Xw+Y = wild type red eyes; X-linked dominant allele Xw Xw , XwY = white eyes; X-linked recessive allele Y = Y sex chromosome vg+ = wild type wings; autosomal dominant vg = wingless; autosomal recessive Predict ratios/proportions of genotypes and phenotypes of offspring from the following cross, of a white-eyed male with wild type wings and a wild type red eyed female with wild type wings: indicate sex of offspring along with phenotypes. XwY vg+ vg x Xw+Xw vg+vgarrow_forwardIdentify each of the following statements as true or false. The two white chromosomes in B are homologous chromosomes. Genes A, B, and C are linked genes. A trihybrid Punnett square can be used to determine the possible combinations of the F1 generation.arrow_forwardWhat aspect of chromosome behavior most clearly accounts for Mendel's law of segregation? Movement of sister chromatids to opposite poles at anaphase Il of meiosis. Movement of homologous chromosomes to opposite poles at anaphase I of meiosis. Crossing over between homologous chromosomes during prophase I of meiosis. Replication of chromosomes prior to meiosis. Independent alignment of different homologous pairs on the metaphase I spindle.arrow_forward
- Consult Figure 4, which shows the distribution of chromosome segregation for a cell with genotype M/m; B/b. For each panel, state whether the illustration is possible for mitosis, meiosis I, meiosis II, or not possible for the genotype. Assume no crossing over. Panel A: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotype Panel B: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotypearrow_forwardA phenotypically normal individual has the following combinations of normal and abnormal chromosomes:The normal chromosomes are shown on the left in each pair.Suggest a series of events (breaks, translocations, crossovers, etc.)that may have produced this combination of chromosomes.arrow_forwardDescribe the Principles of Segregation and Independent Assortment in terms of Genetics. How do these Principles express during Meiosis?arrow_forward
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