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Down's syndrome is due to...

Down's syndrome is due to

A

nondisjunction of chromosomes

B

crossing over between genes

C

linkage of genes

D

sex linked inheritance

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The correct Answer is:
A
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Read the following five statement five statement (A to E )and select the option with all correct statement : (A) Down's syndrome id due to trisomy of chromosome 22 , (b) Genes are the due of inhetitance ( c) Variation is the degree by which progeny differ from their parents. (d) In chicken ,sex chromosome in male are ZW ,and in females are ZZ (E) Sickle cell anaemia is caused due to change of one base in the gene coding for b-chain of haemoglobin

Down syndrome is due to :

Down syndrome is due to :

Down syndrome is due to chromosome number :

Pick out the correct statements (a) Haemophilia is a sex linked recessive disease (b) Down syndrome is due to aneuploidy (c ) Phenyl ketonuria is an autosomal recessive gene disroder (d) Sickle cell anaemia is X-linked recessie gene disoreder

Edward's syndrome, Patau's syndrome and Down's syndrome are due to

Turner's syndrome is due to

Turner' s syndrome is due to

Turner's syndrome is due to

MCGROW HILL PUBLICATION-HEREDITY AND EVOLUTION -HIGHER ORDER THINKING QUESTIONS
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