Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 18, Problem 8TY
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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What is the explanation for maternal effect inheritance at the molecularand cellular level?a. The father’s gene is silenced at fertilization.b. During oogenesis, nurse cells transfer gene products to the oocyte.c. The gene products from nurse cells are needed during the veryearly stages of development.d. Both b and c are correct.
In genetic maternal effect, the phenotype of the individual is determined by which of these statements?
A. The sex of the parent who transmits the gene
B. The nuclear genotype of the maternal parent
C. The sex of the individual with only one sex able to express the phenotype
D. Cytoplasmic genes usually located in the mitochondria
E. A combination of environmental factors and the genotype of the individual
Nondisjunction can happen in males and females. It has been found to correlate with advanced maternal age but not paternal age. Why is that?
A.
Because estrogen promotes non-disjunction.
B.
Because oogenesis has a prolonged prophase and is more prone to have errors with maternal age.
C.
Because more mutations can happen in females.
D.
All of the above.
Chapter 18 Solutions
Biology
Ch. 18.2 - Prob. 1CCCh. 18.3 - Prob. 1CCCh. 18.3 - Prob. 1CSCh. 18.5 - Prob. 1CSCh. 18.5 - Prob. 1CCCh. 18.6 - Prob. 1EQCh. 18.6 - Prob. 2EQCh. 18.6 - Prob. 3EQCh. 18.6 - Prob. 1CCCh. 18.6 - Prob. 2CC
Ch. 18 - Which of the following is an example of an...Ch. 18 - Prob. 2TYCh. 18 - A female mouse that is Igf2 Igf2 is crossed to a...Ch. 18 - Prob. 4TYCh. 18 - Prob. 5TYCh. 18 - Prob. 6TYCh. 18 - Prob. 7TYCh. 18 - Prob. 8TYCh. 18 - Based on the ideas proposed by Morgan, which of...Ch. 18 - Extranuclear inheritance occurs because a. certain...Ch. 18 - Define epigenetics. Are all epigenetic changes...Ch. 18 - What is a Barr body? How is its structure...Ch. 18 - Core Concept: Information A core concept of...Ch. 18 - Prob. 1COQCh. 18 - Mendel studied seven traits in garden pea plants,...
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- Which of the following must be true about the inheritance the trait depicted in the pedigree diagram below. A. it is recessive B. It is dominant C. It is on the X chromosome D. There is not enough information to determine the mechanism of inheritancearrow_forwardPiebald spotting is a condition found in humans inwhich there are patches of skin that lack pigmentation. The condition results from the inability ofpigment-producing cells to migrate properly duringdevelopment. Two adults with piebald spotting haveone child who has this trait and a second child withnormal skin pigmentation.a. Is the piebald spotting trait dominant or recessive?What information led you to this answer?b. What are the genotypes of the parents?arrow_forwardMatch 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_forward
- Color blindness in men is controlled by a recessive gene located on the X chromosome. Can a brother and sister with color blindness have another normal brother? A. Yes, if the mother is a carrier. B.Yes, if the mother is homozygous. C.Yes, if the father is heterogametic. D.Yes, if the father is a carrier.arrow_forwardIn 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 organisms with X and Y chromosomes, many more genes can be found on the X chromosome than on the Y chromosome. In mammals, how might this deviate from traits being expressed, according to Mendel? A. Females might exhibit a mix of traits rather than all dominant or all recessive traits. B. Only females will have the traits resulting from the X-linked genes. C. Females will overproduce some proteins in relation to males’ production levels. D. This will not result in individuals deviating from Mendel’s principles.arrow_forward
- Explain the term maternal inheritance? Which characters show this type of inheritance?arrow_forwardExplain this human pedigree and what inheritance is this?arrow_forwardBecause red-green colour-blindness is an X-linked recessive condition, which of the following situations is not possible? a) a colourblind father passes the condition to this daughter b) a colourblind father passes the condition to his son c) a heterozygous mother passes the condition to her daughter d) a heterozygous mother passes the condition to her son Red-green colour blindness is a deficiency of colour vision so that a person affected by it cannot tell the difference between red and green. This is an X-linked recessive condition. Which statement is correct? a) The allele is written as X^r, and an affected female is heterozygous. b) The allele is written as X^r; an affected male is X^rY and a heterozygous female is X^RX^r c)The allele is written as X^r and a male with genotype X^RY is affected d) The allele is written as X^R; a normal male is X^RY and a homozygous recessive female is X^rX^r.arrow_forward
- What is Polygenic Inheritance? A) When one gene has many effects B) The additive effect of 2 or more genes C) The genes that cause skin colorarrow_forwardPlease choose the correct answer. If a recessive mutation kills an individual during the early stages of its development, what is the possible mode of inheritance exhibited if a recessive F1 with heterozygous parents survives? a. epigenetic inheritance b. maternal inheritance c. maternal effect d. organelle inheritancearrow_forwardWhich of the following statements describes the multifactual inheritance in genetics? A. One locus is associated with different traits. B. One locus is associated with variable phenotypes of a trait. C. Several loci are associated with the trait.arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY