Principle of Inheritance and VariationHard
Question
Down′s syndrome is due to
Options
A.crossing over
B.linkage
C.sex-linked inheritance
D.non- disjunction of chromosomes
Solution
non- disjunction of 21st chromosomes during oogenesis is the cause of Down’s syndrome. It is also called mongolian syndrome.
Create a free account to view solution
View Solution FreeTopic: Principle of Inheritance and Variation·Practice all Principle of Inheritance and Variation questions
More Principle of Inheritance and Variation Questions
A person with blood groups A possesses...Different mutation referrable to the same locus of chromosome give rise to...How many types are of gametes will form during selfing of AaBbCc....If there are four possible allelic forms for the gene controlling ABO blood group then what will be the number of possib...A Drosophila indvidual having chromosomal constituion as 3A + XXY is...