Aneuploidy.

Identify the correct statement(s) forn the below (I) In papaya sex chromosomes look like autosomes. (II) Aneuploidy is represented as 4n . (III) Herbert Taylor proved the process of transcription experimentally. (IV) Caffeine is a comutagen

Pick out the correct statements. I. Haemophilia is a sex-linked recessive disease. II.Down's syndrome is due to aneuploidy. III. Phenylketonuria is an autosomal recessive gene disorder. IV. Sickle-cell anaemia is an X - linked recessive gene disorder.

Pick out the correct statements (i) Haemophilia is a sex-linked recessive disease (ii) Down's syndrome is due to aneuploidy (iii) Phenylketonuria is an autosomal dominant gene disorder (iv) Phenylketonuria is an autosmal recessive gene disorder

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Aneuploidy which occurs due to loss of a complete homologous pair of chromosomes is :

Pick out the correct statements. i. Haemophilia is a sex linked recessive disease ii. Down's syndrome is due to aneuploidy iii. Phenylketonuria is an autosomal dominant gene disorder iv. Phenylketonuria is an autosomal recessive gene disorder V. Sickle cell anaemia is an X-linked recessive gene disorder