People who have hemophilia often have longer bleeding after an injury or surgery. People who have severe hemophilia have spontaneous bleeding into the joints and muscles. Hemophilia occurs more commonly in males than in females. The two most common types of hemophilia are hemophilia A also known as classic hemophilia and hemophilia B also known as Christmas disease.
A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness or alternatively, hemophilia , marries a normal male. What proportion of their male progeny will have red-green color blindness or alternatively, will be hemophiliac? Tutorial Genotypes and phenotypes of parents The eggs of the mother will contain either a normal X chromosome or an X chromosome with the mutation causing red-green color blindness. The sperm of the father will contain either the normal X chromosome or the Y chromosome. Genotypes and phenotypes of offspring None of the female children would be red-green color blind, but half would be "carriers. For help on setting up and interpreting a punnet square review the tutorial of problem 1 in Monohybrid Cross of Mendelian Genetics. Sex-Linked Inheritance Problem Set Problem 7: Red-green color blindness in humans Tutorial to help answer the question A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness or alternatively, hemophilia , marries a normal male.
Genetics Project - Hemophilia. Fun Facts! Sex-Linked Disorder: Hemophilia is located on the X chromosome It is recessive allele on the X chromosome There is a point mutation that changes one of the codons into a premature stop codon, resulting in a nonsense mutation It causes in shortened length of the DNA, which results in not creating certain proteins In this case, it does not produce either a clotting factor VIII, IX, and XI This causes a genetic disorder of either Hemophilia A, Hemophilia B, or Hemophilia C respectively. Punnett Squares.
This man is exhibiting a genetic trait — the dimples in his cheeks when he smiles. Genetic traits are characteristics that are encoded in DNA. Some genetic traits, like dimples, have a simple inheritance pattern like the traits that Gregor Mendel studied in pea plants. The way these traits are inherited by offspring from their parents is called Mendelian inheritance.