Co-Dominance/Multiple Alleles

Till now we have seen that the F1 generation resembles either of the two parents and not both. However, in co-dominance, the F1 generation resembles both parents. The human blood group is an excellent example of co-dominance. The ABO blood groups are controlled by a single gene I, but it has multiple...

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PEDIGREE ANALYSIS: PRACTICE PROBLEMS

https://youtu.be/4nfdm6hT-r8 Q1. Identify the inheritance pattern in the following picture. The above pedigree is Autosomal recessive.  Recessive because there is skipping of generation. Autosomal recessive because, it does not fulfill X-linked recessive condition. For X-linked...

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PEDIGREE ANALYSIS

There are four different types of inheritance that are considered in pedigree analysis. These are mentioned below: Autosomal Dominant (Examples: Polycystic kidney disease, Huntington's disease, hereditary spherocytosis) Autosomal Recessive (Examples: Sickle cell anemia,cystic fibrosis, Tay-Sachs...

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DISCUSSION QUSTIONS ON LINKAGE AND RECOMBINATION

Q1. An individual with cd genes was crossed with wild type + +. On test crossing F1, the progeny was + c 105, + d 115, cd 880, and + + 900. Distance between cd genes is: a. 11 map units b. 5.5 map units c. 44 map units d. 88 map units Solution: The simplest way to solve this problem...

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LECTURE 4: LINKAGE AND RECOMBINATION

Thomas Hunt Morgan and his colleagues discovered the variation that arises due to sexual reproduction.  Morgan worked on Drosophila. Why Drosophila to study linkage and recombination? Small genome size with only 4 pairs of chromosomes Genome size = 1.2 x 10^8 bp (approx 14,000 genes) Short...

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