Q: 1. What are some of the medical applications of karyotyping? 2 What kind of chromosomal aberration…
A: Genetic abnormalities are conditions caused by changes to the genes or chromosomes. Inherited…
Q: 1. In fruit flies, white eyes are X-linked recessive mutation. If a female who is a carrier of the…
A: Introduction :- A gene's allele is one of two or more variants. For each gene, an individual…
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Q: 5. Show the cross of a red eyed female (heterozygous) and a red eyed male. What are the genotypes of…
A: Given: Red eyes female is heterozygous Male is red eyed. The disease is X linked. The Punnett square…
Q: 4. Show a cross between a pure red eyed female and a white eyed male. What are the genotypes of the…
A: The genetic traits of an organism are referred to as a genotype. Physical features are referred to…
Q: 9. The male sex chromosomes are В. Х (LT#5) D. XY А. оо С. X 10. Males get their sex-linked traits…
A: Chromosomes are thread-like structures present inside the nucleus of the cells. Chromosome is made…
Q: 1. How are twins derived?
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Q: 1. Why some people resort to phenocopy? Write 2 pros and cons of phenocopying. 2.Comment in “ No…
A: Introduction :- A phenocopy is a change in phenotype (usually referring to a specific trait) induced…
Q: 4. Characterize the following human chromosomes as to size and as to position of its centromere.…
A: human chromosome consist of 22 autosomes and 1 sex chromosome.
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A: Genes are the units (physical and functional) of heredity, made up of DNA or deoxyribonucleic. In an…
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A: Genes located close together on the same chromosome are transmitted as a single unit to the daughter…
Q: 1. Examine the chromosomes shown below from two people. Then, answer the questions that follow. 88…
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Q: 7- What type of inversion has break points that flank the centromere? a) paracentric b) O…
A: Inversion is a phenomenon where chromosome rearrangement takes place, breakage and rearrangement…
Q: 2. What is the result of crossing over? A. recombination B. mutation C. linkage D. adaptation
A: The field of biology that deals with the study of inheritance are known as genetics. Organisms pass…
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Q: 2. List down all the possible types of gametes produced by the following individuals with genotypes:…
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Q: 6. An X-linked ichthyosis is a recessive form of a family of skin diseases caused by a hereditary…
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Q: Describe how a cross between two closely related organisms may result in genetic problems.
A: Cross or Mating in between closely related organisms is called as inbreeding. This type of breeding…
Q: 2. Identify the kind of chromosome error in each diagram. Chromosomal Error X X Y TIID ×
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Q: heterozygous genotype
A: The various characters expressed by organisms are dependent of gene present in the DNA. The traits…
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A: Meiosis is a process in which a single cell divides twice to produce four cells with half the amount…
Q: 3. What are other types of chromosomal aberrations? List examples for each type.
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Q: 3. Kleinfelter syndrome a. What is the genetic abnormality that occurs? b. What are some symptoms?…
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Q: 器 6 *器 S5 * ** The karyotype pictured here represents A. a normal male B. a normal female OC.a Down…
A: The representation of all the chromosomes of the cell nucleus of males or females is representation…
Q: 6. Find three examples of human phenotypes determined strictly by genetics.
A: 6. A phenotype is a trait or a characteristic that can be observed in an organism. It results from…
Q: 1. Why is the incidence of trisomy of larger chromosomes rarer than the incidence of trisomy of…
A: A trisomy is an abnormal number of chromosome conditions in which instead of two there are three…
Q: 2 In mammals, males have two different sex chromosomes (X and Y) and females have two similar sex…
A: Sex of an individual human or birds is determined by the presence of specific chromosomes. Usually…
Q: 7. With half the SEX CHROMOSOME (two letters) from each parent, what does the sex chromosome of the…
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Q: Male chromosome is __________________ ? A! XX B! YX C! XY D! YY
A: A chromosome is an organized and packed form of DNA present inside the cell nucleus. Different…
Q: 9. Neither Mendelian genetics nor genetic linkage can accurately explain all forms f chromosome…
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Q: 1. Compare the number of chromosomes in the Down syndrome with the nor- mal karyotypes explain the…
A: Chromosomes are filamentous bodies present in the nucleus. They are composed of DNA(…
Q: 3. Red-green color blindness is caused by an X-linked recessive allele. Suppose a color-blind man…
A: Suppose, the color blind allele is Xc (recessive) and the normal wild type allele is X. Now, in the…
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Q: 1) What is Dosage compensation as it relates to sex chromosomes
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Q: 5. What are the genotypes of individuals in the following autosomal recessive trait, attached…
A: Since the trait is an autosomal recessive trait the affected individuals will have the genotype (ww)…
Q: 7. Domestic house cats have a diploid chromosome number of 38. How many chromosomes would you expect…
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Q: 1. How many chromosomes in a normal human karyotype? 2. How many autosomes in a normal human…
A: A cell’s DNA set is called its genome. Most prokaryotes have a single circular DNA chromosome, the…
Q: For part c, do they consider the total sex chromosomes to be 2 or 3?
A: The total number of sex chromosomes in the given karyotype is 3.The human has a total of 46…
Q: 2. Why is meiosis in human females described as asymmetric?
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Q: 17- Klinefelter syndrome in humans, which leads to underdeveloped testes and sterility, is caused by…
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Q: 1. Color blindness is a trait carried on the sex chromosomes. Let C be normal color vision and e b…
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Q: 7) The Law of Independent Assortment has a couple caveats. One is that genes near each other on the…
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Q: 3. A man who has polydactyly and normal vision marries a color-blind woman with a normal number of…
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Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
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- Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele? c. If a female is heterozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele?In a college genetics laboratory course, a healthy student constructs a karyotype from a cell from inside her cheek. She finds only one chromosome 3 and one chromosome 21, plus two unusual chromosomes that do not seem to have matching partners. a. What type of chromosomal abnormality does she have? b. Why doesn’t she have any symptoms? c. Would you expect any of her relatives to have particular medical problems?1. A mother with blood type A has a child with blood type O, and she claims that Mister X is the father. Mister X denies that he could possibly be the father, because he has blood type B. If you were the judge presiding over this case, which of the following arguments would you find most convincing? a. Mr. X could be the father if his blood genotype is IBIB, and the mother’s blood genotype is IAIA b. Mr. X cannot be the father because a child with blood type O cannot have a parent with blood type B c. Mr. X could be the father if his blood genotype is IBi, and the mother’s blood genotype is IAi d. Mr. X cannot be the father because a parent with blood type B cannot have a child with blood type O e. Mr. X cannot be the father because the human ABO blood types are sex-linked traits 2. A monohybrid cross between two pea plants producing yellow peas, resulting in an F1 phenotypic ratio of 3:1 (three yellow pea plants to one green pea plant) indicates what about the parental pea plants?…
- As a genetic counselor, you may face some ethical dilemmas.Imagine that a couple came to your office to discuss potential color blindness in their children.The man is not color blind, but his wife is. They already have one daughter that is color blindand want to know the probability of future children having the disorder. First, you will need toexplain to the couple the difference between sex chromosomes and autosomal chromosomes andthat color blindness is caused by a recessive mutation in a gene found on the X chromosome.Once they understand this, you can then explain to them the probability of other offspring havingthe disorder. What is the dilemma in this case and why might you need to suggest to the couplethat they see a marriage counselorA tomato geneticist attempts to assign five recessivemutations to specific chromosomes by using trisomics.She crosses each homozygous mutant (2n) with each ofthree trisomics, in which chromosomes 1, 7, and 10 takepart. From these crosses, the geneticist selects trisomicprogeny (which are less vigorous) and backcrosses themto the appropriate homozygous recessive. The diploidprogeny from these crosses are examined. Her results, inwhich the ratios are wild type:mutant, are as follows:Which of the mutations can the geneticist assign towhich chromosomes? (Explain your answer fully.)The karyotype of a young girl who is affected with familialDown syndrome revealed a total of 46 chromosomes. Her olderbrother, however, who is phenotypically unaffected, actually had45 chromosomes. Explain how this could happen. What wouldyou expect to be the numbers of chromosomes in the parents ofthese two children?
- How do you figure out the geno and phenotype from the info given? 2 pages out the lab but I figured once explained I’ll be able to do understand and do the rest!1. a) If you were at risk of a fatal disease such as Huntington’s disease and only the 95% accurate preliminary genetic test was available, would you take the test? After all, 95% of the time the test would tell you whether you would eventually get Huntington’s disease or whether you did not have to worry about getting this disease. b) The linkage distance between the DNA sequence used in the test and the actual Huntington’ disease locus was 5%. In a large sample of the Venezuelan family, what percentage of people would inherit the DNA sequence but not the Huntington’s allele (i.e. be a false positive test for Huntington’s)? What percentage of that large Venezuelan family would not inherit the DNA sequence but would inherit the Huntington’s allele (i.e., be a false negative test for Huntington’s)?HUMAN KARYOTYPE ANALYSISAnswer the following questions based on the given karyotype below:(see attched) a. What is the chromosome number of the individual? ___________________b. Give the sex of the individual. ______________c. Based from the karyotype, identify the name of the genetic condition of the individual. Listdown two (2) distinctive characteristics of the affected individual.
- What is the chromosome number of the individual? Based from the karyotype, identify the name of the genetic condition of the individual. List down two (2) distinctive characteristics of the affected individual.Imagine that you are a genetic counselor, and a couple planning to start a family comes to you for information. Charles wasmarried once before, and he and his first wife had a child withcystic fibrosis. The brother of his current wife, Elaine, died ofcystic fibrosis. What is the probability that Charles and Elainewill have a baby with cystic fibrosis? (Neither Charles, Elaine,nor their parents have cystic fibrosis.)5) Humans who have an abnormally high level of cholesterol are said to suffer from familialhypercholesterolemia. The gene for this disorder is dominant (C). A man who isheterozygous for familial hypercholesterolemia marries a woman who is homozygousfor the recessive allele. What is the probability that they will have children that sufferfrom this disorder? please draw the puutnet square and also write the parents and gemtaics top the puutnet square thanks