BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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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.
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 ?
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
Chapter 13 Solutions
BIOLOGY
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_forwardWhat 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.arrow_forwarda. 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?arrow_forward
- When the phenotype of the offspring is determined by endoparasites in the father it is… a. epistasis b. due to genes located in the mitochondria. c. a maternal effect d. non-nuclear inheritance e. a non-additive genetic effectarrow_forwardIn mammals, males have X and Y sex chromosomes, while females have two Xs. While the Y sex chromosome has very few genes associated with it, the X sex chromosome has many that are important to maintain life. How do mammals account for this in terms of equaling out gene expression levels? A. Mammals do not need to account for this, but birds do. B. Females produce more proteins from X-linked genes than males do. C. The single X of the males works twice as hard to keep up with the female’s two Xs. D. The females have one X inactivated to permit the males to keep pace with them.arrow_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_forward
- Colorblindness and hemophilia are both X-linked traits in humans. Explain how a female who has a defective color vision gene on one X chromosome and a defective blood clotting gene causing hemophilia on the other X chromosome can be neither a hemophiliac nor colorblind? Please discuss the effect of Gene dosage compensation in your answer and in your answer describe the molecular process by which this occurs.arrow_forwardThe 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.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_forward
- The 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_forwardAll of the following human genetic diseases exhibit maternal inheritance EXCEPT: A. Leber's hereditary optic neuropathy B. Myoclonic epilepsy C. Kearnes-Sayre syndrome D. Edwards syndromearrow_forwardWhich pathology leads to an increased risk of Alzheimer’s disease? Select one: a. Accumulation of the Amyloid β peptide b. Homozygosity for the e2 ApoE allele c. Sedentary lifestyle in young adulthood d. A mutation in the presenilin 4 gene e. Increase in blood cholesterolarrow_forward
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