BIOLOGY,VOL.1-W/ACCESS >CUSTOM<
10th Edition
ISBN: 9781259123146
Author: MCG CUSTOM
Publisher: MCG CUSTOM
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Chapter 13, Problem 6U
How does maternal inheritance of mitochondrial genes differ from sex linkage?
a. Mitochondrial genes do not contribute to the
b. Because mitochondria are inherited from the mother, only females are affected.
c. Since mitochondria are inherited from the mother, females and males are equally affected.
d. Mitochondrial genes must be dominant. Sex-linked traits are typically recessive.
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Students have asked these similar questions
In 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.
In humans, failure to synthesize melanin leads to a condition called albinism. This is a recessive condition. If parents heterozygous (Nn) for normal skin pigmentation give rise to 4 offspring, what is the probability that:
a. they will have an albino child?
b. the second child is albino?
c. they will have all boys with normal pigmentation?
d. they will have ONE albino child, no matter the order.
a. Explain the difference between maternal inheritanceof organelle DNAs and maternal effect inheritance.b. How do the inheritance patterns of phenotypescaused by mitochondrial genes differ from thosecaused by maternal effect genes?
Chapter 13 Solutions
BIOLOGY,VOL.1-W/ACCESS >CUSTOM<
Ch. 13.1 - Describe sex-linked inheritance in fruit flies.Ch. 13.1 - Prob. 2LOCh. 13.2 - Prob. 1LOCh. 13.2 - Explain the genetic consequences of dosage...Ch. 13.3 - Prob. 1LOCh. 13.4 - Prob. 1LOCh. 13.4 - Explain the relationship between frequency of...Ch. 13.4 - Prob. 3LOCh. 13.5 - Prob. 1LOCh. 13.5 - Prob. 2LO
Ch. 13.5 - Prob. 3LOCh. 13 - Inquiry question Mendel did not examine plant...Ch. 13 - What would Mendel have observed in a dihybrid...Ch. 13 - Prob. 2DACh. 13 - Why is the white-eye phenotype always observed in...Ch. 13 - In an organisms genome, autosomes are a. the...Ch. 13 - What cellular process is responsible for genetic...Ch. 13 - The map distance between two genes is determined...Ch. 13 - How many map units separate two alleles if the...Ch. 13 - How does maternal inheritance of mitochondrial...Ch. 13 - Which of the following genotypes due to...Ch. 13 - Prob. 1ACh. 13 - As real genetic distance increases, the distance...Ch. 13 - Down syndrome is the result of trisomy for...Ch. 13 - Genes that are on the same chromosome can show...Ch. 13 - The A and B genes are 10 cM apart on a chromosome....Ch. 13 - Prob. 6ACh. 13 - Color blindness is caused by a sex-linked,...Ch. 13 - Assume that the genes for seed color and seed...Ch. 13 - A low frequency of calico cats are male (about...
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- a. Each person inherits one copy of the Huntington's Disease gene from each parent. Explain why the negative control sample (from an unaffected individual) only produced one band. b. Explain why the positive control sample (from an individual affected by Huntington’s disease) produced twobands.arrow_forwardPhenylketonuria (PKU) is a disease that results from a recessive gene. Suppose that two unaffected parents produce a child with PKU. a. What is the probability that a sperm from the father will contain the PKU allele? b. What is the probability that an egg from the mother will contain the PKU allele? c. What is the probability that their next child will have PKU? d. What is the probability that their next child will be heterozygous for the PKU gene?arrow_forwardPhenylketonuria (PKU) is a disease that results from a recessive gene.Suppose that two unaffected parents produce a child with PKU. a. What is the probability that a sperm from the father will contain the PKU allele?b. What is the probability that an egg from the mother will contain the PKU allele?c. What is the probability that their next child will have PKU?d. What is the probability that their next child will be heterozygous for the PKU gene?arrow_forward
- Please explain mitochondrial DNA inheritance . How is it inherited ? Why is it predisposed to mutations ? How can one identical twin be normal but the other identical twin have a mitochondrial disease ?arrow_forwardIn humans, a dimple in the chin is a dominant characteristic controlled by a single gene.a. A man who does not have a chin dimple haschildren with a woman with a chin dimple whose mother lacked the dimple. What proportion of theirchildren would be expected to have a chin dimple?b. A man with a chin dimple and a woman who lacksthe dimple produce a child who lacks a dimple.What is the man’s genotype?c. A man with a chin dimple and a nondimpledwoman produce eight children, all having the chindimple. Can you be certain of the man’s genotype?Why or why not? What genotype is more likely,and why?arrow_forwardColor 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_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_forwardFruit fly segmentation begins during oogenesis and is affected by which maternal genes? (Note answers can be multiple or if not given from the option, provided the proper answer) a. Gap genes b. Oskar genes c. Pair-rule genes d. Gurken genesarrow_forwardWhich statement about the pattern of inheritance for a recessive X-linked allele is true? A. Unaffected parents can produce daughters who are affected. B. Unaffected parents can have sons who are affected and daughters who are carriers. C. Unaffected fathers can be carriers. D. Affected parents do not produce affected children. E. Every affected person has an affected parent.arrow_forward
- in a summary use your understanding of molecular biology to explain that recessive alleles are expressed through transcription and translation, and that they may have functional gene products. Describe how the interaction of the products produced by each allele results in what we see as dominant or recessive traits.arrow_forwardThe father has curly hair; the mother has also curly hair. Will it be possible for their offspring to have straight hair since both parents are curly? a. No, it is very impossible to have a child with straight hair. b. Yes, it is possible for their offspring to have straight hair if the mother also has black hair. c. Yes, all of their offspring will have straight hair. d. Yes, the parents will have offspring with straight hair if the parents are heterozygous for traits. e. Yes, the parents will have offspring with straight hair if the parents are homozygous for the trait.arrow_forwardMarfan Syndrome is a dominant trait inheritance in humans. It is a disorder that affects the connective tissue in many parts of the body. 1. What is/are the possible genotype/s of the children if both parents do not exhibit Marfan Syndrome disease? A. mm only B. Mm only C. MM only D. MM or Mm E. Mm or mm 2. What is the probability of having a normal child if the mother does not have the disease while her husband has the disease? A. 0% only B. 0% or 100% C. 0% or 50% D. 50% only E. 100% 3. What is the probability of having a girl child with Marfan Syndrome if both mother and father has the heterozygous genotype for the disease? A. 1/4 B. 1/2 C. 3/4 D. 3/8 E. 1/8 PLEASE ANSWER ALL THE QUESTIONS BECAUSE THEY ARE CONNECTED, THANK YOU!arrow_forward
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