. Human geneticists interested in the effects of abnormalities in chromosome number often karyotypetissue obtained from spontaneous abortions. About35% of these samples show autosomal trisomies,but only about 3% of the samples display autosomalmonosomies. Based on the kinds of errors that cangive rise to aneuploidy, would you expect that thefrequencies of autosomal trisomy and autosomalmonosomy should be more equal? Why or why not?If you think the frequencies should be more equal,how can you explain the large excess of trisomiesas opposed to monosomies?

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: Number of chromosomes in the individual's body cells Cell division error that resulted in trisomy 18…

A: INTRODUCTION A karyotype is a collection of a species' or an individual organism's full set of…

Q: In humans, chromosome 16 sometimes has a heavily stained area near the centromere. This feature can…

A: So, non disjunction of the chromosomes occurs in the condition when the homologous chromosomes fail…

Q: If a population of white throated sparrows was found in a much warmer climate, where homozygous…

A: Supergenes play a critical part within the hereditary makeup and evolutionary adaptability of life…

Q: What is the mode of inheritance for the following pedigree? Drag the correct answer to the rectangle…

A: Introduction :  A pedigree analysis diagram determines the occurrence and appearance of a particular…

Q: Why is the incidence of survivable genetic disorders involving deletions of parts of chromosomes so…

A: Deletions are the genetic aberrations or mutations in which a sequence of DNA or a segment of a…

Q: B. A woman is a carrier of a Robertsonian translocation between chromosomes 18 and 21.      (i) Her…

A: The question is about a woman who has a rearrangement of her chromosomes 18 and 21 called…

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: The difference between continuous and discontinuous variation.

A: In biology, variations are differences between two living organisms or groups of living organisms.…

Q: Bloom syndrome is an autosomal recessive disease that exhibitshaploinsufficiency. A recent survey…

A: A disease is a state of unhealthiness of the physical body, mind and social interaction. A disease…

Q: Why are people with balanced chromosomal translocations phenotypically normal? Do they suffer from…

A: Chromosomal translocations are genomic events in which either a part or the entire chromosome breaks…

Q: Chorionic villus sampling is a procedure to determine if there are any abnormalities in chromosome…

A: Chorionic villus sampling is also used for the same purpose. Chorion is basically a membrane that…

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: Cystic fibrosis in humans is caused by mutations in a single gene and is inherited as an autosomal…

A: Cystic Fibrosis (CF) is an inherited disease that is caused by mutations in gene which is passed…

Q: Autosomal homologous chromosomes   a. are joined at the centromere b. are the same size but…

A: Autosomal chromosomes  These are any chromosomes but not sex chromosomes. They contain gene for body…

Q: 3 5 富 10 11 12 13 14 15 16 17 18 19 20 x Y 21 22

A: A karyotype is defined as the organization of the chromosome content of any given cell type. Thus,…

Q: Tay–Sachs disease is caused by loss-of-function mutations ina gene on chromosome 15 that encodes a…

A: Tay–Sachs disease can be defined as a hereditary condition that causes nerve cells present in the…

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.