A woman with an abnormally long chromosome 13 (and a normalhomolog of chromosome 13) has children with a man with anabnormally short chromosome 11 (and a normal homolog of chromosome 11). What is the probability of producing an offspringthat will have both a long chromosome 13 and a short chromosome11? If such a child is produced, what is the probability that thischild will eventually pass both abnormal chromosomes to one ofhis or her offspring?

Q: Trisomy 21, or Down syndrome, occurs when there is a normal diploid chromosomal complement but one…

A: Down's syndrome occurs due to an error at the time of gamete formation. As a result the gametes may…

Q: homologous

A: Alleles are a pair of genes that share the same chromosomal location and regulate the same…

Q: What does an extra chromosome 16 mean?

A: Chromosomes, the physical carriers of genes, are the microscopic thread like structures in which the…

Q: During oogenesis, nondisjunction of X chromosome occurred in meiosis I. If the resulting egg unites…

A: Non disjunction is the failure of chromosomes / chromatids to separate during Anaphase. In Meiosis…

Q: Two phenotypically normal parents produce a phenotypically abnormal child in which chromosome 5 is…

A: The scenario described is indicative of a rare genetic condition known as unbalanced translocation.…

Q: what is the benefit of crossing over?

A: REPRODUCTION:- It is the production of offspring from the parents. It is of two types:- 1)Asexual…

Q: (a) what is happening in METAPHASE II? Include Crossing Over and Independent Assortment when they…

A: Metaphase IIIn Metaphase II, the chromosomes line up along the cell's equatorial plane, known as the…

Q: A gene involved with body colour in this species of fruit fly is located on the non-homologous…

A: The Gene for Eye Color in Drosophila: Red vs. BrownIntroductionThis species of fruit fly possesses a…

Q: On rare occasions, an organism may have three copies of achromosome and therefore has three copies…

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

Q: A rare form of dwarfism that also includes hearing loss was found to run in a particular family. It…

A: The inheritance patterns explain how a disease is transmitted in families. These patterns help to…

Q: Two phenotypically unaffected parents produce two children with familial Down syndrome. Regarding…

A: A phenotype is the observable physical and functional traits of an organism which result from the…

Q: What are chromosome 9 characteristics and where does chromosome 9 represent?

A: The humans consist of 46 chromosomes in each cell that are divided into 23 pairs.  There are two…

Q: What are mitosis and meiosis? These two processes are how parent cells produce daughter cells.…

A: Cell division is the process by which cell divides to produce daughter cells. There are two types of…

Q: In which meiotic division does independent assortment of unlinked genes occur? What does…

A: Cell division is a process by which a cell divides and it is necessary for the growth and…

Q: a)What is the synaptonemal complex? b)Why are the X and Y chromosomes not considered homologous even…

A: The synaptonemal complex is a protein structure that forms between two homologous chromosomes during…

Q: What is the inactivation ofthe X chromosome? What is aBarr body?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: A male Drosophila from a wild-type stock is discovered to haveonly seven chromosomes, whereas…

A: In male drosophila, one member of chromosome IV has translocated to the distal end of Chromosome II.…

Q: Is chromosome 22 hereditary?

A: Heredity can be defined as the transfer of character in the offsprings from their parents through…

Q: How does a chromosomal duplication occur?

A: When a part of chromosome is present in two copies or duplicated, it is known as duplication. This…

Q: Two nonhomologous chromosomes have the following segments, where * represents the centromere:…

A: Two nonhomologous chromosomes have the following segments, where * represents the…

Q: Sue's chromosome #18 pair looks like this: Bob's chromosome #18 pair looks like this: Bob and Sue…

A: In non disjunction, there is failure in separation of chromatid. This non disjunction can cause…

Q: 5) Cystic fibrosis is caused by a gene on chromosome 7 and results in the build-up of mucus in the…

A: Cystic fibrosis or (CF)- it is an inherited disorder that leads to severe damage to digestive…

Q: With two pairs of homologous chromosomes, four kinds of gametes can be produced. How many kinds of…

A: Gametes are formed by the process of meiosis in the gamete mother cells.

Q: Although there can be individuals born with only a single X chromosome, there are not individuals…

A: The X chromosome is one of the two sex chromosomes in humans (the other is the Y chromosome). It is…

Q: Why are the X and Y chromosomes not considered homologous even though they recombine at the PAR…

A: Sex chromosomes are a type of chromosome that participates in sex determination. Humans and most…

Q: The Yellow Fever mosquito has 2N number of 6 chromosomes and a Yellow dung fly has 2N numberof 12…

A: Cells are the biological, structural and functional unit of an organism. Cell has a nucleus that…

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.