EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 17, Problem 5TY
Summary Introduction
Introduction:
Inheritance is a process by which the offsprings acquire traits from their parents. In inheritance, some specific traits from parents are passed on to the next generation in the form of chromosomes.
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The chromosomal theory of inheritance states thata. chromosomes contain DNA.b. humans have 23 pairs of chromosomes.c. all cells have genes.d. genes are on chromosomes.
When a gene is inactivated during gamete formation and thatgene is maintained in an inactivated state in the somatic cells ofoffspring, such an inheritance pattern is calleda. linkage.b. X-chromosome inactivation.c. epistasis.d. genomic imprinting.e. polygenic inheritance.
Which of the following is not one of the tenets of the chromosome theory of inheritance?a. Chromosomes contain the genetic material that is transmitted from parent to offspring and from cell to cell.b. Chromosomes are replicated and passed along, generationafter generation, from parent to offspring.c. Chromosome replication occurs during the S phase of thecell cycle.d. Each parent contributes one set of chromosomes to itsoffspring.
Chapter 17 Solutions
EBK BIOLOGY
Ch. 17.1 - Prob. 1CCCh. 17.2 - Prob. 1EQCh. 17.2 - Prob. 2EQCh. 17.2 - Prob. 3EQCh. 17.2 - Prob. 1CCCh. 17.2 - Prob. 1BCCh. 17.2 - Prob. 2CCCh. 17.3 - Prob. 1BCCh. 17.3 - Prob. 1CCCh. 17.4 - Prob. 1CC
Ch. 17.4 - Prob. 2CCCh. 17 - Prob. 1TYCh. 17 - Based on the ideas proposed by Morgan, which of...Ch. 17 - Prob. 3TYCh. 17 - Extranuclear inheritance occurs because a. certain...Ch. 17 - Prob. 5TYCh. 17 - Modification of a gene during gamete formation or...Ch. 17 - Prob. 7TYCh. 17 - When a gene is inactivated during gamete formation...Ch. 17 - Prob. 9TYCh. 17 - Prob. 10TYCh. 17 - Prob. 1CQCh. 17 - Prob. 2CQCh. 17 - Prob. 3CQCh. 17 - Mendel studied seven traits in garden pea plants,...Ch. 17 - Prob. 2COQ
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- Which of the following is not a characteristic of X-linked recessive traits in humans? a. Approximately one-half of the sons of a female carrier are affected. b. More males than females affected. c. Phenotypically normal daughters of affected men are always carriers. d. They cannot be passed from father to son. e. Affected daughters always have an affected mother.arrow_forwardThe chromosomal theory of inheritance states that genes are on chromosomes. Therefore, any chromosomal abnormality will affect the number and location of genes therefore lead to the over- and under- expression of genes. Which of the following condition will NOT result in the over-expression of a gene? A. Trisomy 18 B. Triploidy 3n C. Monosomy X D. Duplication of a chromosome segmentarrow_forwardIn a trisomic individual, such as a person with trisomy 21 (Down syndrome),a genetic imbalance occurs becausea. genes on chromosome 21 are overexpressed.b. genes on chromosome 21 are underexpressed.c. genes on the other chromosomes are overexpressed.d. genes on the other chromosomes are underexpressed.arrow_forward
- Which of the following is associated with chemical modifications to chromosomes that label alleles as coming from the mother or father? a. Multiple alleles b. Extranuclear inheritance c. Epigenetic marks d. Small non coding RNAsarrow_forwardIn humans, hemophilia is an X-linked recessive condition characterized by the inability of blood to clot normally. A woman who is a carrier for hemophilia marries a man who has hemophilia. What are the genotypes of the woman and man, respectively? a. xH+xH+, xH+y b. xH+xH xH+y c. xH+xH xHy Od. XHXH, XH+y O e. xHxH xHyarrow_forwardFragile X is a disorder which causes mental impairment in affected individuals. The trait which is due to a mutation in the FMR1 gene on the X chromosome is inherited in a recessive manner. An unaffected son was born to an affected man and an unaffected woman. The woman’s mother was affected while the father was normal. a. Indicate the gene notation. b. Give the genotype of the son. c. Is it possible for the couple to have an affected daughter? affected son? Derive the genotypic and phenotypic ratios for the offspring. Show and label your solutions properly. d. If the couple has four children, what is the probability that they will have three normal daughters and one normal son?arrow_forward
- Which of the following is a FALSE statement? A) An individual with two X chromosomes and one Y chromosome has testes. B. The human female determines the sex of her offspring. (C) Genomic imprinting allows for differential expressions of an allele. D. Epigenetic changes can be passed on to a zygote. Deletion of the SRY gene would cause male fetuses to develop as females.arrow_forwardWhen one examines the pattern of inheritance of a trait and finds that it is transmitted from fathers to sons to grandsons (never appearing in the females genotype) what is the conclusion about the inheritance pattern? a. Sex linked b. Sex limited С. Sex related d. X linked e. Sex influenced Red-Green color blindness a. Has its genetic determination on the x chromosome b. Affects more males than females С. Is influenced by somatic sex differentiation d. A and b e. All of thesearrow_forwardExtranuclear inheritance is one form of _______, and one specific example of extranuclear inherited phenotype is _______ a. Non-Mendelian inheritance, green–white variegated plants b. Mendelian inheritance, mitochondria c. Non-Mendelian inheritance, endoplasmic reticula d. Mendelian inheritance, lysosome e. Bacterial inheritance, chlorophylarrow_forward
- In the snail Limnaea peregra, coiling of the shell is determined by the genes D for right-handed coiled shells, and d for left-handed coiled shells. The gene for the right-handed shell is dominant. However, the direction of coiling in any single individual is determined by the genotype of the maternal parent producing the egg, regardless of the progeny's genotype. Which describes this type of inheritance? A. infectious heredity B. maternal effect C. dominant X-linked D. organelle heredityarrow_forwardIn which of the following does one gene control the expression of another, independently inherited gene? a. Pleiotropy b. Epistasis c. Multifactorial inheritance d. codominance e. incomplete penetrancearrow_forwardIn diseases with a recessive inheritance linked to sex (X chromosome), from the mother: A. 50% of women and 50% of men are affected. B. The woman is always affected by the disease. C. The man is always affected by the disease. D. 50% of women are affected.arrow_forward
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