Which of the following types of chromosomal changes would youexpect to have phenotypic consequences? Explain your choices.A. Pericentric inversionB. Reciprocal translocationC. DeletionD. Unbalanced translocation
Q: An inversion heterozygote has the following inverted chromosome:What is the result if crossing over…
A: Introduction Inversion: in this type of chromosomal abnormality there is usually two breaks happens…
Q: Suppose gene D and gene E are linked. If a DdEe parent produces 40% De gametes, 42% dE gametes, 8%…
A: When two genes are located next to each other or close together on a chromosome, they are said to be…
Q: Crossover occurs during what phase? What is this process and why is it important?
A: ANSWER;- Crossing over occurs during prophase I of meiosis before quadruplicates are aligned along…
Q: Explain the two major mechanisms by whichchromosomal rearrangements take place.
A: The breaking and reassembling of chromosomal segments accompanying evolution that can occur within…
Q: Inversion heterozygotes can have a higher probability of producing gametes that are abnormal in…
A: Organism consisting of an one homolog consisting of inverted Segment while another consists of…
Q: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…
A: Translocation is caused Due to separation of a chromosome segment and its union toa nonhomologous…
Q: Inversions are said to “suppress crossing over.” Is this terminologytechnically correct? If not,…
A: An inversion is a type of chromosomal variation that arises due to reversing (180 degrees) of a…
Q: Due to crossing over within an inversion loop, a heterozygotewith a pericentric inversion may…
A: Inversion is a type of mutation in which a chromosome segment is broken in two places, turned upside…
Q: In Drosophila, the X chromosomes may become attached to one another (XXn ) such that they always…
A: Sex determination in Drosophila - There is a chromosomal basis of inheritance occurs which is based…
Q: Are all reciprocal translocations likely to result in sterility? How can one result in normal…
A: Reciprocal translocation is one of the two types of chromosome translocation. Chromosome…
Q: Explain the difference between crossing over and reciprocal translocation. Give an example of a…
A: Genetic recombination is a process by which organisms acquire genetic diversity. The exchange of…
Q: You observe a very large pairing loop at meiosis. Is it more likely to be from a heterozygous…
A: The cell is the fundamental underlying, useful, and natural unit of every known life form. Cells are…
Q: List down all the possible types of gametes produced by the following individuals with genotypes: а.…
A: The reproductive cells of an organism are called gametes. Additionally, they are referred to as sex…
Q: A normal female is discovered with 45 chromosomes, one of which exhibits a Robertsonian…
A: Every living species has two types of cells, somatic cells (diploid) which are responsible for…
Q: Chromosome translocations include: A. Alterations in which the genetic material remains the same…
A: There are various ways by which structures of chromosomes are altered and translocation is one of…
Q: Which of the following events or processes can result in Patau syndrome, Turner Syndrome, or…
A: The gene is the basic unit of heredity. Most of the organisms have Deoxyribonucleic acid (DNA) as…
Q: Which is NOT a way that deletions can cause abnormal phenotypes?
A: Haploinsufficiency situation arrives due to total level of gene product/ a particular protein…
Q: A human individual is phenotypically female, but her interphase somatic nuclei show the presence of…
A: There would be three X-chromosomes in the karyotype of the female as only single X-chromosome is…
Q: An inversion heterozygote has the following inverted chromosome:What is the result if crossing over…
A: Step 1 Inversion is a change in chromosome structure in which part of the chromosome either gets…
Q: Aneuploidy is typically detrimental, whereas polyploidy is sometimes beneficial, particularly in…
A: Ploidy refers to the chromosomal number in an organism. Euploidy is a condition when two pairs of…
Q: Explain why unequal crossing over always produced a duplication and deletion at the same time, not…
A: Crossing over occurs in the first division of meiosis at this stage each chromosome has replicated…
Q: A patient has mental deficiency, a short stature, and the mongolian type of the eyelid fold. The…
A: A pateint has mental deficiency, a short stature, and Mongolian type of the eyelid fold. The…
Q: What types of gametes are formed by the following genotypes? All gene pairs are segregating…
A: Introduction : The number of gametes formed is determined by the number of heterozygous alleles…
Q: Explain why small deletions and duplications are less likely tohave a detrimental effect on an…
A: A mutation is a permanent change in the DNA of a cell such that the sequence deviates from what is…
Q: Explain why when a chiasma is formed, only 50% of the meiotic products will be of recombinant type.…
A: Chaismata are the points on Homologus chromosomes where crossing over takes place between…
Q: Which of the following best describes Klinefelter syndrome? A. It is an example of aneuploidy.…
A: Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of X…
Q: Explain, with the aid of a drawing, how a dicentric bridge is produced when crossing over takes…
A: Chromosome is a compact structure of a DNA molecule wrapped around some proteins. It is generally…
Q: When 23 pairs of human chromosomes are arranged in a diploid set, this layout is called a
A: A chromosome is a long DNA molecule with part or the entirety of the hereditary material of a…
Q: Which of the following karyotypic sex chromosome abnormalities result(s) in a male phenotype?…
A: Genetic diseases are caused by mutations in genes.
Q: chromosomes are inherited from one generation to the next, they are inherited...
A: Chromosomes are inherited generation to generation in such a way that half from their mother and…
Q: An inherited disorder caused by a defective or absent enzyme is called (a) a karyotype (b) trisomy…
A: Introduction:- Inherited metabolic diseases are a group of medical problems caused by genetic flaws…
Q: Explain the rationale behind a testcross. Is it necessary for one ofthe parents to be homozygous…
A: Genetics is the study of inheritance of characters which is the heredity and the variation of the…
Q: EXAMPLE Ah nas a rare X-linked dominant condition called amelogenesis Imperfecta, whicn results in…
A: Amelogenesis imperfecta is due to the malfunction of the proteins in the enamel as a result of…
Q: A normal female Drosophila produces abnormal eggs that contain all (a complete diploid set) of her…
A: Although the two mammals and fruit flies produce XX females and XY male, their chromosomes…
Q: P generation АА ВВ aa bb Gamete formation Gamete formation Gametes (А В (a b) Fertilization F1…
A: Recombinant DNA Technology that uses enzymes to cut and paste together DNA sequence of interest.…
Q: During the observation of a baby the diagnosis of Down's syndrome was made. What is the main cause…
A: Normally a baby is born with 46 chromosomes. But in case of down syndrome babies have extra…
Q: Genes A and B are on different chromosomes. An individual has the genotype: AaBb You sequence two…
A: Meiosis is the reductional division. during this the chromosome number is reduced to half and from a…
Q: a) What is the sex of this individual? Justify your answer. b) Name any two loci in this individual…
A: Mitosis is the process by which a cell divides into two daughter cells.
Q: A human karyotype showing 22 pairs of autosomes and two X chromosomes would be O a. a normal male. O…
A: The Sex chromosome(X and Y) originates from a pair of autosomes. Nature can also be defined as our…
Q: discuss briefly The genetics of triploidy
A: Triploidy is a rare chromosomal abnormality. It is the presence of an additional set of chromosomes…
Q: The process of mitotic recombination involves the a. exchange of chromosomal regions between…
A: The organisms have different techniques to increase their genetic diversity. Techniques such as…
Q: e are 46 chromosomes in humans, of which A. any 23 chromosomes are from father and remaining from…
A: Humans have forty-six chromosomes in every diploid cell. Among those, there are 2 sex-determining…
Q: How many chromosomes are there in the somatic cells of a newborn boy with: a. The cri-du chat…
A: Chromosomes are responsible for our inherited characteristics . Any abberation in chromosome no. Or…
Q: Production of more than one phenotypictrait by a single gene is calleda. pleiotropy.b. genetic…
A: Pleiotropism or pleiotropy is the phenomenon of multiple effect of a gene in which a sing e pair o…
Q: Sketch a series of diagrams showing each of the following, making sure to end each series with…
A: Cell division is a process known as meiosis. Four haploid cells are supposed to define that they are…
Which of the following types of chromosomal changes would you
expect to have
A. Pericentric inversion
B. Reciprocal translocation
C. Deletion
D. Unbalanced translocation
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X a. Draw the pairing arrangement of these chromosomes in prophase I of meiosis. b. Diagram the alternate, adjacent-1, and adjacent-2 segregation patterns in anaphase I of meiosis. c. Give the products that result from alternate, adjacent-1, and adjacent-2 segregation.During the pathoanatomic inspection of a baby-boy's dead body the following abnormalities: polydactily, microcephaly, a cleft lip and cleft palate, hypertrophy of the parenchymal organs were found. These symptoms are typical of Patau syndrome. What is the cause of this disease? Select one: a. Trisomy on the 21st chromosome. O b. Trisomy on the 18th chromosome. c. Trisomy on the 13th chromosome. d. Trisomy on X chromosome. e. Monosomy on X chromosome.List the diagnostic features (genetic or cytological) that are used to identify these chromosomal alterations:a. Deletionsb. Duplications
- An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B C D E F A • B C V W X R S T • U D E F R S T • U V W X a. Draw a picture of these chromosomes pairing in prophase I of meiosis. b. Draw the products of alternate, adjacent-1, and adjacent-2 segregations. c. Explain why the fertility of this individual is likely to be less than the fertility of an individual without a translocation.Two chromosomes have the ff. order of genes: Normal A B centromere C D E F G H I Abnormal a b centromere g f e d c h i a. Does the abnormal chromosome have a pericentric or paracentric inversion? Why? b. Draw a sketch to show how these two chromosomes (duplicated) would pair during synapsis. Assume a CO will occur between genes E and F. What gametes are ultimately formed at the end of telophase II and describe.For each of the terms in the left column, choose thebest matching phrase in the right column.a. reciprocal translocation 1. lacking one or morechromosomes or having oneor more extra chromosomesb. gynandromorph 2. movement of short DNAelementsc. pericentric 3. having more than two completesets of chromosomesd. paracentric 4. exact exchange of parts of twononhomologous chromosomese. euploids 5. excluding the centromeref. polyploidy 6. including the centromereg. transposition 7. having complete sets ofchromosomesh. aneuploids 8. mosaic combination of maleand female tissue
- Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.In a karyotype of a man whose wife has had several miscarriages, it was discovered that he had onlv 45 chromosomes. However, he displayed no obvious phenotypic defects. Furthermore, one of the chromosomes of pair 15 was abnormally long. Which of the following terms best describes the condition of this man? a. monosomy b,. trisomy c. tetrasomy d. translocation carrier e. edward syndormeA young couple is planning to have children. Knowing that there have been a substantial number of stillbirths, miscarriages, and fertility problems on the husband’s side of the family, they see a genetic counselor. A chromosome analysis reveals that, whereas the woman has a normal karyotype, the man possesses only 45 chromosomes and is a carrier of a Robertsonian translocation between chromosomes 22 and 13. a. List all the different types of gametes that might be produced by the man. b. What types of zygotes will develop when each of gametes produced by the man fuses with a normal gamete produced by the woman? c. If trisomies and monosomies entailing chromosomes 13 and 22 are lethal, approximately what proportion of the surviving offspring are expected to be carriers of the translocation?
- A young couple is planning to have children. Knowing that there have been a substantial number of stillbirths, miscarriages, and fertility problems on the husband’s side of the family, they see a genetic counselor. A chromosome analysis reveals that, whereas the woman has a normal karyotype, the man possesses only 45 chromosomes and is a carrier of a Robertsonian translocation between chromosomes 22 and 13. Q. List all the different types of gametes that might be produced by the man.A young couple is planning to have children. Knowing that there have been a substantial number of stillbirths, miscarriages, and fertility problems on the husband’s side of the family, they see a genetic counselor. A chromosome analysis reveals that, whereas the woman has a normal karyotype, the man possesses only 45 chromosomes and is a carrier of a Robertsonian translocation between chromosomes 22 and 13. Q. What types of zygotes will develop when each of gametes produced by the man fuses with a normal gamete produced by the woman?Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrograph: a. Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge) b. Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph) c. Explain how these aberrations are formed d. Will this result to sterile or fertile gametes? Explain.
