You observe a very large pairing loop at meiosis. Is it more likely to be from a heterozygous inversion or heterozygous deletion? Explain

Q: . If alleles R and s are linked on one chromosome and r and S arelinked on the homologous…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

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: What condition results from the fusion of a normal gamete (n) and a gamete missing a chromosome (n –…

A: Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly…

Q: For a certain chromosomal region, the mean number of crossovers at meiosis is calculated to be two…

A: In the meiotic cell division process, a single germ cell divides twice to produce four non-identical…

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: Given the end results of the two types of division, why is it necessary for homologs to pair during…

A: Cell cycle is a series of changes that occurs in a newly divided cell through which it duplicates…

Q: Explain how nondisjunction can cause monosomy andtrisomy aneuploidy.

A: Failure of separation of Chromosome during nuclear division causes non disjunction

Q: Describe the phenotypic consequences of deletions inhomozygotes and heterozygotes.

A: Heterozygotes are the ones that have non-similar alleles in their gene. Heterozygotes have the…

Q: A cat is born with two X chromosomes and one Y chromosome. One of the X chromosomes carries the…

A: The fur color of the cats are generally controlled by genes present on the X-chromosome. One form of…

Q: Explain how nondisjunction produces monosomy and trisomy chromosomeconditions.

A: Mitosis: A type of cell division in which parent cell gives rise to 2 identical daughter cells with…

Q: In the following pedigree, is the disorder’s mode of inheritanceautosomal dominant, autosomal…

A: In this pedigree, affected individuals appear in every generation. There are no carriers shown in…

Q: If two genes on the same chromosome, A and B, are completely linked and no crossovers can occur…

A: When two genes are located on the different chromosomes or are far apart there are high chances of…

Q: Would you assume that the length of a chromosome might have anything to do with the number of…

A: The chromosomes are duplicated during the process of cell division. The process of  cell division…

Q: Can (1) chain and (2) ring structural abberations still lead to fertile gametes? explain

A: Abberations indicates the genetic material which should be DNA . The DNA transfer the information…

Q: Diagram the cross: a male fly expressing white (w) on the x chromosome, vestigial wings (vg) on…

A: There are few important points: Mainly Four types of sex determining mechanism exists in animal -…

Q: Describe the outcomes of the three types of matings (F+ x F- , Hfr x F- , and F' x F- ).

A: The F+, F-,hfr, and F' cells are involved in conjugation that is a gene transfer method in bacteria.…

Q: Consider the panels A-D in Figure 1. Which one panel illustrates the segregation of alleles on…

A: Meiosis is a reductional division. It leads to reduce the ploidy to half in daughter cell. It…

Q: Why does more crossing over occur between two distantly linkedgenes than between two genes that are…

A: Answer- Crossing over is the mechanism in which a part of the sister chromatids of the homologous…

Q: Suppose a design problem was coded with 5 genes on a single chromosome, and single-point crossover…

A: During cell division, the genetic material of the cells stored in the chromosomes aligns together.…

Q: What is inversion heterozygotes ?

A: Heterozygote can be defined as the genes that are  for the specific trait are considered to be…

Q: Explain why inversions and reciprocal translocations do not usually cause a phenotypic effect. In a…

A: in this, no addition or removal of genetic material is done there is a relative change in the…

Q: A fruit fly of genotype B R/b r is testcrossed with b r/b r.In 84 percent of the meioses, there are…

A: Recombination means the method of generating a new blend of genes by crossing over by meiosis…

Q: What is the end result of crossing over?

A: Crossing over allows the exchange of genetic material and forms unique combinations of alleles. This…

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: Which of the following chromosome pairs would contain all of the same genes (not necessarily at the…

A: A chromosome is a long DNA molecule that comprises part or all of an organism's genetic material.…

Q: Seedless watermelons that you find in the supermarketare triploids, where x = 11.a. At what…

A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…

Q: What kind of chromosomal mutations is/are produced by unequal crossing over?

A: Mutation refers to both the process of altering a gene or chromosome and the outcome of that…

Q: How did the cessation of crossing-over contribute to the disparity between the X and Y chromosomes?

A: Crossing over is a process where two homologous chromosomes exchange their genetic material to…

Q: In this pedigree, which parent-child pair allows you to reject the hypothesis of dominant X-linked…

A: Sex-linked dominant: In this type the gene or condition is dominant type which means expressed in…

Q: Why is the frequency of recombinant gametes always half the frequency of crossing over?

A: Crossing over is the way in which exchange of genes between two chromosomes, lead to non-identical…

Q: would you expect the genetic information in the secondary oocyte and the first polar body to be…

A: No. The genetic information in the secondary oocyte and the first polar body is not to be identical.

Q: Chickens with shortened wings and legs are called creepers. When creepers are mated to normal…

A: Genes come in pairs and are responsible for the inheritance and expression of the associated…

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: In organisms with the ZZ-ZW sex-determining system, from which of the following possibilities can a…

A: Introduction: In ZZ-ZW system of sex determination, female carries two different gametes i.e., ZW…

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: Which non-disjunction event has more chromosome number aberrations? Why?

A: Meiosis is a reductional division. It produces haploud gametes.

Q: What is inversion heterozygote?

A: Inversion is a chromosomal rearrangement when a segment of chromosome breaks and then rejoins in…

Q: In organisms with the ZZ-ZW sex-determining system, from which of the following possibilities can a…

A: The Sex-determination system helps to determine sexual characteristics in an organism. Sex…

Q: Suppose gene D and gene E are linked. If a DdEe parent produces 40% De gametes, 42% dE gametes, 8%…

A: Genetic distances It is the distance between two or more than gene loci on a single chromosome which…

Q: What some ways that incomplete penetrance can occur? Give at least two possible ways on why it…

A: Penetrance refers to the proportion of people with a particular genetic change (such as a mutation…

Q: A diploid species with 44 chromosomes (i.e., 22 per set) is crossedto another diploid species with…

A: Genetics is the branch of biology that deals with the study of genome of an organism and its gene…

Q: What is the cross between the progeny of F1 and the homozygous reccessive parent called? How is it…

A: Introduction  Monohybrid cross deals with one character controlled by one pair of alleles such as…

Q: Why do individuals with an excessive number of sex chromosomes often show minimum phenotypes?

A: Introduction :- The X and Y chromosomes are found in humans and most other mammals. Males have both…

Q: Below is a chromosome with arrows showing the breakpoints of an inversion. ABCDE F GH What would be…

A: DNA is a double stranded helical molecule that is made up of repeating nucleotides. Mutation is any…

Q: How do we know if Nondisjunction occurs in meiosis one or two?

A: Meiosis is a type of cell division which generally occurs in germ cells or reproductive cells.…

Q: In Question 23, if one chromosome has R and T and the homologous chromosome also has R and T, does…

A: We are authorized to answer only one question at a time, since you have not mentioned which question…

Q: When is the only time crossing over can occur?

A: The cell cycle is the orderly series of events that allows a cell to grow and divide forming…

Q: What is a crossing over, and what is the purpose of it?

A: The cell cycle is the orderly series of events allowing a cell to grow and divide forming daughter…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.