How is it that genetic abnormalities that include an extra Y chromosome do not have a severe phenotype?

Q: How many types of trisomy are there?

A: Trisomy is the presence of one extra copy of a chromosome in the genome. It is mostly caused by the…

Q: What are polytypic genes?

A: Genes are defined as the building blocks and the coded information that defines the complete physico…

Q: boy with Klinefelter syndrome (47,XXY) is born to a mother who  is  phenotypically  normal  and  a…

A: Klinefelter syndrome is a rare disorder that is caused in males alone. It is due to the presence of…

Q: A boy with Down syndrome (trisomy 21) has 46 chromosomes. One parent and his two older sisters have…

A: Since, we are entitled to answer the first three subparts of a question. We are answering the first…

Q: If a father is affected by an X-linked dominant condition and the mother is normal, what is the…

A: When the gene responsible for the occurrence of a trait or disorder is present on one of the sex…

Q: How is Down syndrome caused?

A: Human genetic disorders are caused due to the absence or excess or abnormal arrangement of one or…

Q: Hemophilia is another example of an X-linked disease caused when a recessive allele (Xh) is…

A: Hemophilia is a bleeding disorder;which shows X linked recessive pattern of inheritance as the…

Q: For the following diseases with their potential pedigree, mode of inheritance and the responsible…

A: Detailed explanation: Let's analyze Pedigree C, which is an X-linked recessive pedigree related to…

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: Give bilological term for an alternation in the genetic material that can be inherited.

A: Step 1 Genetic alteration includes chromosomal abnormalities and gene mutations. It occurs due to a…

Q: Differentiate a multifactorial disorder from a chromosomaldisorder.

A: A genetic disorder is a discorder caused by a whole or partly change in the sequence of DNA from…

Q: What causes most of the phenotypic abnormalities in someone with Down's Syndrome? A) They have…

A: Aneuploidy is the condition in which abnormal number of chromosomes are seen in the cell.Normally…

Q: Predict the phenotypes associated with the following mutant states. For each of the four conditions…

A: Gonadal determination of sexually indifferent gonads and genitalia involves a series of events…

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: A gene determines the disorder. AA and Aa genotype cause disease. Whereas aa encodes normal…

Q: Assuming no other abnormalities, classify each of the following human sex chromosome complements as…

A: Human sex chromosomes are a pair of chromosomes that determine the sex of an individual. Females…

Q: Men have XY​ (or YX) chromosomes and women have XX chromosomes.​ X-linked recessive genetic…

A: The trait is X linked recessive in nature.  The X chromosome encodes normal phenotype. It is…

Q: The karyotypes shown here depict chromosomal abnormalities. Name the syndromes and if they are male…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…