Pedigree of a mitochondrial disease II One key finding is that the “root" of the human mtDNA tree is in Africa, suggest- ing that Homo sapiens originated in Africa and from there dispersed throughout the world (see Chapter 18). FIGURE 3-25 This pedigree shows that a human mitochondrial disease is inherited only from the mother.

Q: Spherocytosis is an inherited blood disease in whichthe erythrocytes (red blood cells) are spherical…

A: Penetrance is defined as the proportion of individuals who carries a specific variant or mutated…

Q: The accompanying pedigree shows the pattern of transmission of two rare human phenotypes: cataract…

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

Q: In the results that Mendel obtained, the violet colored flower was dominant to the white flower…

A: According to Mendel, various hereditary traits are controlled by factors and there is a pair of…

Q: Assume that blood type is inherited as A and B dominant over O, but A and B are codominant over each…

A: Proteins for blood groupings such as A, B are present on the surface of red blood cells.

Q: Two average-sized parents have three children. The first child is very short, the second very tall,…

A: Hereditary inheritance is the process of transfer of genes (traits ) from parent to offspring  Types…

Q: In humans, a rare dominant disorder known as nail-patella syndromecauses abnormalities in the…

A: Pedigree analysis is a scientific approach that helps to study the inheritance of genes. In this…

Q: Based on the observed inheritance pattern and ratio of phenotypes, what are the genotypes of the…

A: Mutations in the CFTR gene lead to the genetic condition known as cystic fibrosis (CF). The CFTR…

Q: *Cystic fibrosis is a rare autosomal recessive condition. A phenotypically normal man whose father…

A: Mendel proposed three laws based on his research. His research provided a picture of the independent…

Q: Labrador retrievers may be black, brown, or golden in color (seethe chapter opening photograph on p.…

A: Epistasis is the masking or modification of expression of a single trait in different combinations…

Q: Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have three…

A: Fraternal or dizygotic twins are produced when two different ova are fertilised by 2 different…

Q: Hypophosphatemia (vitamin D-resistant rickets) is inherited as a sex-linked dominant trait (H). A)…

A: Hypophosphatemic rickets is a rare form of rickets that can be inherited genetically as a dominant…

Q: Frank and Susan both have freckles but they're firstborn son Lawrence does not demonstrate the…

A: The phenomenon of inheritance involves genotypes and phenotypes. The genotype of an organism…

Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.