Inheritance of sex linked recessive tralts Example: Hemophilia Inheritance of hemophilia is sex lĩnked. Males with the recessive (hemophilia) allele, are affected. Females can be carriers. (normal female) Xx (carrier female) e-X eXxh (hemophiliac female) (normal male) Xhy (hemophiliac male) (a) Enter the parent phenotypes and complete the Punnett square for a cross between a normal male and a carrier female. Using the codes: XX (b) Give the ratios for the phenotypes from this cross. Phenotype ratios: Inheritance of sex linked dominant traits Example: Sex linked form of rickets A rare form of rickets is inherited on the X chromosome. Using the codes: XX (normal female); XY (normal male) XRX (affected heterozygote female) XRXR (affected female) XRY (affected male) (a) Enter the parent phenotypes and complete the Punnett square Tor a cross between an affected male and heterozygous female. (b) Give the ratios for the phenotypes from this cross. Phenotype ratios:

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A: The specific sequence of nucleotides is known as gene. It is present in DNA. It encodes protein.

Q: Autosomal Dominant O Autosomal Recessive O X-Linked Dominant O X-Linked Recessive

A:

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Q: inheritance

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.