On average, what proportion of X-linked genes in the first individual are the same (inherited from a common ancestor) as those in the second individual? a. A male and his mother b. A female and her mother c. A male and his father d. A female and her father e. A male and his brother f. A female and her sister g. A male and his sister h. A female and her brother

On average, what proportion of X-linked genes in the first individual are the same (inherited from a common ancestor) as those in the second individual? a. A male and his mother b. A female and her mother c. A male and his father d. A female and her father e. A male and his brother f. A female and her sister g. A male and his sister h. A female and her brother

Name: On average, what proportion of X-linked genes in the first individual
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Description: On average, what proportion of X-linked genes in the first individual are the same (inherited from a common ancestor) as those in the second individual? a. A male and his mother b. A female and her mother c. A male and his father d. A female and her

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter11: The Basic Principles Of Heredity

Section: Chapter Questions

Problem 1TYU: One of the autosomal loci controlling eye color in fruit flies has two alleles: one for brown eyes...

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What was the hypothesis of the X-linked cross conducted in the lab (between white-eyed female and re-eyed male) with the white mutation in Drosophila and written up in your lab report? A All female offspring will inherit red eyes from their mother because the mutation is X linked recessi B All female offspring will inherit white eyes from their mother because the mutation is X linked recessive. C All male offspring will inherit white eyes from their mother because the mutation is X linked recessive. D All male offspring will inherit red eyes from their mother because the mutation is X linked recessive. E All male offspring will inherit white eyes from their mother because the mutation is X linked dominant.
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.
Consider a couple: a woman who is homozygous for a recessive mutation that causes X-linked colorblindness, and a man with full color vision (he does not carry a copy of the mutation). a) What is the probability that a son of this couple will be colorblind? b) What is the probability that a daughter of the couple will be colorblind?
How is this trait inherited? A. The trait is epistatic. B. The trait is X-linked. C. The trait is dominant. D. The trait is recessive.
A. Give 7 genes located on X chromosomes and provide 2 protein products of each gene. B. Give 4 genes located on Y chromosomes and provide 2 protein products of each gene.
a. Determine if the pedigree below can be for a trait that is X-linked traits. Write the genotype of each individual next to the symbol. b. Is it possible that this pedigree is for an X-linked recessive trait? c. What can you conclude about the children if both parents are affected with an X-linked recessive trait?
Which observation led Thomas Morgan to realize that the gene for fruit fly eye color was located on a sex chromosome? a. He noticed that only male F2 flies could have white eyes; no females displayed this trait. b. He saw that the F2 generation of flies had the classic 3:1 phenotypic ratio of red eyes to white eyes c. He read it in a biology textbook d. He noticed that only mutant flies had white eyes
For an X-linked recessive disease where the father is unaffected: a) An affected father cannot pass the disease mutation on to his daughters. b) all affected mothers will be heterozygous at the trait locus. c) a homozygous affected mother will have only affected male offspring. d) a homozygous affected mother will have only affected female offspring. e) if a homozygous affected mother mates with an unaffected father, 75% (on average) of the male offspring will be affected.
Fragile 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?
Two pure-breeding mutant plants produce white flowers. When they are crossed, all of the progeny have wild-type purple flowers. What does this genetic complementation tell you? A) The genes are part of two distinct biosynthetic pathways. B) The two lines exhibit different mutations in the same gene. C) More than one gene is involved in determining the phenotype. D) The allele is pleiotropic. E) The allele exhibits incomplete dominance.
A fungus with white spores cross fertilizes a fungus with black spores. If 10% of the progeny bear white spores while 90% of the progeny bear black spores, what must be true? A. The trait for spore color is determined by exactly one gene. B. The trait for spore color is determined by more than one gene. C. The allele for black spores is dominant over that for white spores. D. The allele for white spores is dominant over that for black spores.
Which statement best describes the reason maternal recessive CYP1A1 polymorphisms of CYP1A1 decrease birth weight in children of smokers? Answer choices (a) It reduces the metabolism of nicotine (b) It increases the metabolism of nicotine (c) It reduces the metabolism of PAHs (d) It increases the metabolism of PAHs