Q: Draw two replicated, un-condensed, homologous chromosomes that have the genes A and E on them. This…
A: Homologous chromosomes - Homologous chromosomes is the pair of DNA. These chromosomes are present in…
Q: What do you mean by homologous chromosomes.
A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…
Q: Autosomal homologous chromosomes A. have identical gene locations and alleles B. are joined at the…
A: Introduction :- For genes with the same corresponding loci, homologous chromosomes are made up of…
Q: What do you mean by homologous recombination?
A: Genomes are dynamic entities that change as a result of mutations and recombinations. Recombination…
Q: No disjunction is the reason we get chromosome number anomalies. Explain?
A: Chromosomes are present in the nucleus of the cell and are actually a compilation of the cell’s DNA.…
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: Why mitochondrial DNA is inherited from mother only in contrast with nuclear DNA which inherited…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
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: How linkage and crossing over is inter-related explain with suitable examples.
A: Genetic linkage is a tendency of the DNA sequences or genes to get linked with each other in a…
Q: Here is a situation in which there is a repeated sequence. This picture shows two homologous…
A: Chromosomal crossover explains the exchange of genetic material while sexual reproduction between…
Q: Explain why the value of the recombination frequencybetween any two genes is limited to 50%.
A: Recombination frequency is the proportion of a number of recombinant offspring resulted from a…
Q: why why heterozygosity for a deletion can be harmful?
A: Deletion refers to a type of mutation in which the genetic material in a chromosome is deleted or…
Q: Shuffling the Homologues Creates Novel Combinations of Chromosomes
A: The variation in the organism is seen only when there is a recombination of the alleles. This…
Q: What type of chromosomal rearrangement occurs o Crossovers at a repeated sequence on two…
A: Mutations are changes that occurs in the deoxyribonucleic acid (DNA) sequence, either due to…
Q: Why do you think there are no viable trisomies of chromosome 1?
A: Chromosome 1 is the largest chromosome in human. Approximately 8% of the total DNA is found in this…
Q: Bombay phenotype in this extended family?
A: False paternity is the condition whene a man is wrongly identified as father of any child. Now a…
Q: Duplication Inversion Deletion
A: Gene mutations are rare and random changes in DNA sequence which result in alteration of polypeptide…
Q: Based on Figure 17-30, are normal genomes ever formedfrom the two types of segregation? Are normal…
A: Adjacent -I segregation is the segregation of non-homologous centromere in a reciprocal…
Q: The mosquito that causes yellow fever, Aedes aegypti is diploid and has 3 chromosomes. Not…
A: Diploid (2n) organism produce gamate through Meiosis. So the gamete are haploid i.e contain half of…
Q: Explain why recombination events do not always result in crossing-over.
A: Genetics is the branch of biology which deals with genes, heredity, and genome in the organism.…
Q: 13.2 13.1- 12. 11 11- 12 22 23 24 HIDGE b с d f g bo h
A:
Q: Why RF = 50% in a dihybrid for genes on nonhomologous chromosomes
A: Mendel's law of independent assortment holds good only for the traits with non homologous…
Q: Why Relatively Small Number ofGenes Can Produce EnormousPhenotypic Complexity
A: this question can be addressed in multiple ways, one angle that is relevent to look at is how some…
Q: Suppose one of these four bases iplet, how many different triplets elected for each of the three…
A: Nucleobases, also known as nitrogenous bases or simply bases, are nitrogen-containing biological…
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: Mendel genetics and how meiosis plays into the law of segration and law of independent assortment in…
A: The indirect process of cell division in which the chromosomes of parent cells divide once but the…
Q: Which of the following types of chromosomal changes would youexpect to have phenotypic consequences?…
A: Chromosomes carry the genetic material DNA. Chromosomes may undergo rearrangements that are the…
Q: • Deletions remove _______________from a chromosome and causemutant phenotypes mainly through…
A: Mutation is defined as a change which occurs in the sequence of DNA molecule which is due to…
Q: why The chromatids formedby recombination within the inversion loop of a paracentric…
A: When the region between two breaks of the same chromosome rotates 180°, it results in chromosomal…
Q: Explain why autosomal aneuploidy is generally more deleterious than aneuploidy for sex chromosomes.
A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…
Q: In an electrophoretic gel across which is applied a powerful electrical alternating pulsed field,…
A: Introduction Gel electrophoresis is a technique that uses size and charge to separate and analyse…
Q: Progeny of triploid tomato plants often contain parts of an extra chromosome, in addition to the…
A: Triploidy is a rare chromosomal abnormality in which the organism has an extra chromosome in their…
Q: aneuploidies in autosomal chromosomes likely to cause more severe phenotypes compared to…
A: Chromosomal abnormality or alteration is a change in the sequence of the chromosome. These…
Q: Abnoral changes in chromosome number are often from the failure of chromosomes to separate during…
A: Mitosis is the process by which cell divides into its daughter cells. It consists of karyokinesis…
Q: 13 dalian View of the World cable 10. In the figure in the book showing Barbara McCliptock and…
A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…
Q: why Recombination Frequencies BetweenTwo Genes Never Exceed 50%
A: Recombination frequency is determined by the frequency of the recombination eventsbetween the two…
Q: draw the diagram of Deletion loops form in the chromosomes ofdeletion heterozygotes.
A: A 'homologous pair' of chromosomes are approximately the same length and centromere position. They…
Q: 3 10 11 12 13 14 15 16 18 19 20 21 22 Y Is this karyotype male or female? Kind of error (if any).…
A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…
Q: n Figure 4-19, what would be the RF between A/a andB/b in a cross in which purely by chance all…
A: ANSWER: Recombination frequency (θ) is the frequency with which a single chromosomal crossover will…
Q: 36 The diagram below represents a cell containing a pair of chromosomes at metaphase I of meiosis.…
A: The meiosis is a cell division process by which diploid (2n) mother cell divides it's nucleus twice…
Q: A tomato geneticist attempts to assign five recessivemutations to specific chromosomes by using…
A: SECONDARY trisomics, or persons who have one isochromosome in addition to their regular somatic…
Q: Draw two replicated, condensed, homologous chromosomes that have the genes E and F on them. This…
A: Morgan's Theory --Thomas Hunt Morgan (Father of modern and experimental genetics ) ,discovered the…
Q: Alterations of chromosome structure can not be resulted from: اختر احدى الاجابات Translocation…
A: Mutations are errors occur during DNA synthesis . These errors can be adventageus or dangerous ..…
Q: Interspecification crosses are rare in nature and intergenic crosses almost unknown.why?
A: The word cross in genetics means mating or fusing of two individuals which results in the production…
Q: name a disorder karyotype analysis, pick and explain a disorder associated with a variation in…
A: The example of disorder that can be taken in the current scenario which results from variation in…
Q: "A pedigree for one form of human color blindness" Why ?
A: Color vision deficit is a term that refers to a group of disorders that impact color perception. The…
Q: Which of these two mechanisms might be promoted by thepresence of the same transposable element in…
A: Transposable Elements--transposable elements or jumping gene is a DNA sequence that can changes its…
Q: Is this karyotype male or female? What kind of error (if any) Name of syndrome
A: In karyotype, a picture of the person's chromosomes is taken in order to determine the chromosome…
Q: GENETICS In a sexually reproducing diploid organism in which 2n=6, a normal meiocyte in reduction…
A: Meiosis is a reductional cell division that takes place in diploid germ cells of sexually…
Q: Explain why the distance between two genes alonga chromosomeis associated whether they are linked or…
A: Humans have 23 chromosomes. Within it, there are nearly 19000 genes. The term Genetic linkage can…
Why inversion heterozygotes produce few if any recombinant progeny.
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- Figure 7.2 If a mutation occurs so that a fungus is no longer able to produce a minus mating type, will it still be able to reproduce? Figure 7.2 (a) In animals, sexually reproducing adults form haploid gametes from diploid germ cells. (b) Fungi, such as black bread mold (Rhizopus nigricans), have haploid-dominant life cycles. (c) Plants have a life cycle that alternates between a multicellular haploid organism and a multicellular diploid organism. (credit c fern: modification of work by Cory Zanker; credit c gametophyte: modification of work by Vlmastra/Wikimedia Commons)Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it takes place during cell division.Why is chromosome 21 the smallest and not chromosome 22? considering that a karyogram is arranged from largest to smallest
- Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following case A boy having Down syndromeDiploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following case? A man having Klinefelter syndrome and one Barr body.GENETICS In a sexually reproducing diploid organism in which 2n=6, a normal meiocyte in reduction should exhibit a total of 3 bivalents at the metaphase plate. Consider the following organism in the previous statement. if there is no crossing over, the number of possible haploids (gamete) genotypes generated by "chromosome shuffling" during meiosis is _____?
- why Inversion loops form in inversionheterozygoteswhy why heterozygosity for a deletion can be harmful?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 ST • U D E F R ST • U V W X Q. Draw a picture of these chromosomes pairing in prophase I of meiosis.
- Chromosome structural errors can occur during Meiosis which can lead to health disorders. Examine the figure below and select the correct order of error type from left to right in which they appear. duplicati on, translocation, deleti on, inversion duplication, inversion, del etion, translocation O deletion, translocati on, inversion, duplication O translocation, inversion, duplication, deletion inversion, translocation, duplication, deletionSuppose you have a line of mice that has cytologicallydistinct forms of chromosome 4. The tip of the chromosome can have a knob (called 4K) or a satellite (4S) orneither (4). Here are sketches of the three types:4K4S4You cross a 4K/4S female with a 4/4 male and find thatmost of the progeny are 4K/4 or 4S/4, as expected.However, you occasionally find some rare types asfollows (all other chromosomes are normal):a. 4K/4K/4b. 4K/4S/4c. 4KExplain the rare types that you have found. Give, asprecisely as possible, the stages at which they originate,and state whether they originate in the male parent,the female parent, or the zygote. (Give brief reasons.)Progeny of triploid tomato plants often contain parts of an extra chromosome, in addition to the normal complement of 24 chromosomes . Mutantswith a part of an extra chromosome are referred to as secondaries. James and Margaret Lesley observed that secondaries arise from triploid (3 n), trisomic (3 n + 1), and double trisomic (3 n + 1 + 1) parents, but never from diploids (2 n). Give one or more possible reasons that secondaries arise from parents that have unpaired chromosomes but not from parents that are normal diploids.