You are examining the gene expression patterns of twins. Which of the following do you expect? Group of answer choices Older identical twins will have more similar expression patterns than similarly aged fraternal twins Younger identical twins will have less similar expression patterns than older identical twins Newborn identical twins will have very different patterns of gene expression Gene expression patterns in identical twins is not related to age

You are examining the gene expression patterns of twins. Which of the following do you expect? Group of answer choices Older identical twins will have more similar expression patterns than similarly aged fraternal twins Younger identical twins will have less similar expression patterns than older identical twins Newborn identical twins will have very different patterns of gene expression Gene expression patterns in identical twins is not related to age

Name: You are examining the gene expression patterns of twins. Which of the
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Description: You are examining the gene expression patterns of twins. Which of the following do you expect?Group of answer choicesOlder identical twins will have more similar expression patterns than similarly aged fraternal twinsYounger identical twins will have

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter12: Genes And Cancer

Section: Chapter Questions

Problem 3CS: Mike was referred for genetic counseling because he was concerned about his extensive family history...

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. The human IGF2 gene is autosomal and maternallyimprinted. Copies of the gene received from themother are not expressed, but copies received fromthe father are expressed. You have found two allelesof this gene that encode two different forms of theIGF2 protein distinguishable by gel electrophoresis.One allele encodes a 60K (Kilodalton) blood protein;the other allele encodes a 50K blood protein. In ananalysis of blood proteins from a couple named Billand Joan, you find only the 60K protein in Joan’sblood and only the 50K protein in Bill’s blood. Youthen look at their children: Jill is producing only the50K protein, while Bill Jr. is producing only the 60Kprotein.a. With these data alone, what can you say about theIGF2 genotype of Bill Sr. and Joan?b. Bill Jr. and a woman named Sara have two children, Pat and Tim. Pat produces only the 60K protein and Tim produces only the 50K protein. Withthe accumulated data, what can you now say aboutthe genotypes of Joan and Bill Sr.?
Hi, I'm having some trouble with this practice problem from my study guide. If anyone can explain it it would be very helpful! Brindle coloration is a black and brown striping pattern in some dogs. This fur coloration is controlled by different alleles at a single autosomal locus. There are three alleles, KB, kbr and ky. The KB allele is dominant over the other two alleles and produces a solid black color. The allele kbr produces the brindle color pattern and is dominant over the ky allele, which produces yellow fur. Give the genotypes of the parents and offspring in each cross. P: black X yellow; F1: ½ brindle and ½ black P: black X brindle; F1: ½ black, ¼ brindle and ¼ yellow P: brindle X yellow; F1: 100% brindle
Bloom syndrome is an autosomal recessive disease that exhibitshaploinsufficiency. A recent survey showed that people heterozygousfor mutations at the BLM locus are at increased risk of colon cancer.Suppose you are a genetic counselor. A young woman is referred to youwhose mother has Bloom syndrome; the young woman’s father has nofamily history of Bloom syndrome. The young woman asks whether sheis likely to experience any other health problems associated with herfamily history of Bloom syndrome. What advice would you give her?
. Autism is a neurological disorder thought to becaused by mutant alleles of one or more genes.Scientists had been wondering why the number ofchildren diagnosed as autistic increased dramaticallyin a decade, from 1 in 500 in 2002 to 1 in 88 in 2012.Researchers now think that they might have found atleast part of the answer: Men are fathering children atlater and later ages. A paper published in the journalNature in 2012 showed a correlation between paternalage and the incidence of autism; the age of the motherwas not a factor. How does this observation provide apossible explanation for the apparent increase in therate of autism?
I have a biology question, this is a matching question, which is only used once: The phenotype of the heterozygote is a blending of the phenotypes of both homozygotes. One allele masks the expression of the only other allele for the trait. One gene pair will interact so as to control the expression of a second gene pair One example is the ABO blood group system. When 3 or more pairs of genes control the expression of a trait. matched with: multiple alleles incomplete dominance polygenics dominance epistasis
Hi, I'm having trouble with my study guide for my upcoming genetics exam. If someone could please help with work shown and an explanation it would help so much! Thank you!! 2a. The pedigree below represents inheritance of rare condition. What pattern of inheritance is most consistent with the data? Assign alleles to all individuals to support your answer. If an allele is unknown, assign it a ? symbol. NOTE: Individuals whose phenotype or genotype cannot be determined are assumed to be unaffected and homozygous, unless otherwise indicated. 2b. In addition to the alleles you’ve indicated, describe 2 overall features of the pedigree that make it consistent with your chosen form of inheritance. 2c. Based on your mode of inheritance, what is the probability that the child of couple IV-4 x IV-5 will be affected? Show your work. attached is the pedigree
If a dominant disorder is described as being 80% penetrant, what would this mean? The amount of expression within individuals varies O The disorder is present in 20% of the individuals that have the dominant allele 20% of the individuals who have the dominant allele may have genes that mitigate (prevent) the disorder and therefore do not display symptoms O The trait is present in 80% of the total population.
5 f There are two genes that determine the coat colour expression in dogs: eumelanin and merle. These genes are located on two separate chromosomes. For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e). The merle gene controls the degree to which these coat colours are expressed through incomplete dominance. The following table describes the merle gene expression. Genotype MM Mm mm Phenotype White AAY Half colour (Grey or light red) Full colour (Black or Red) 1. If a dog breeder wants to determine the unknown genotype of a dog, what colour of dog must she use as a testcross? 2. A white dog was testcrossed, and all of the puppies had light red coats. What is the genotype of the white dog? Use a Punnett square to show your work. Hint - When a trait is controlled by two genes, an individual's genotype consists of 4 letters. = = = B I 123 ||| 14 E E I ос C GO * ●● ● ●0 00 00 00 ✓ C U up X₂ x²
Let us practice it again! Analyze the pedigree below to answer the questions that follow. Huntington's disease a disorder in which nerve cells waste away, or disintegrate, is passed down through families. certain parts of the brain Huntington's diseate llustration ereated in htps://pregenygenetion.com/ 1. What members of the family above are affected with the Huntington's disease? 2. Tnere are no carriers ior Huntungton's disease you either have it or you do not. Is Huntington's disease caused-by a dominant or recessive trait? 3. Identify the genotypes of the following individuals using the pedigree above. (homozygous dominant, homozygous recessive, heterozygous). I- 1 II -1: II -3: III - 4 : 4. How many children did individuals I-1 and I-2 have? 5. How many girls did II-1 and II-2 have? How many have Huntington's Disease? 6. How are individuals III-2 and II-4 related? I-2 and III-5?
Homozygous mice are better able to adapt to their environment. O Heterozygous mice live shorter lives since they do not have the lethal allele. Is it possible to determine the genotype of an individual expressing a dominant phenotype? Provide evidence to support your claim * Provide at least 3 COMPLETE SENTENCES Your answer This is a required question Is it possible to determine the genotype of an individual expressing a recessive phenotype? Provide evidence to support your claim Provide at least 3 COMPLETE SENTENCES a phenotype is a personality's noticeable traits. Eye color, height and, evident. The genetic contribution to the constitution is named the genotype, So basically phenotypes are on the surfacel Yes it is possible
Look at your family. Identify 1 dominant and 1 recessive trait apparent in your immediate family. Predict how the identified traits will be expressed in future generations. What is known about genes/alleles that affect these traits?
1 LO 78- Explain how organismal phenotypes can be influenced by more than one gene. Select the statements that are true about inheritance patterns of phenotypes In Mendelian inheritance, a single gene codes for a molecule which affects a single trait Organismal traits can be monogenic or polygenic Pleiotropy is the existence of a wide range of phenotypes for a single trait Several regulatory genes can be related to several structural genes, giving rise to many possible phenotypes A gene can only affect one trait at a time