List I | List II | ||
A. | Two or more alternative forms of a gene | I. | Back Cross |
B. | Cross of F1 progeny with homozygous recessive parent | II. | Ploidy |
C. | Cross of F1 progeny with any of the parents | III. | Allele |
D. | Number of chromosome sets in plant | IV. | Test cross |
List I | List II | ||
A. | Down's syndrome | I. | \(11^{\text {th }}\) chromosome |
B. | \(\alpha\) -Thalassemia | II. | \(' \mathrm{X}Â '\) chromosome |
C. | \(\beta\) -Thalassemia | III. | \(21^{\text {st }}\) chromosome |
D. | Klinefelter's syndrome |
IV. | \(16^{\text {th }}\) chromosome |
Statement I: | Failure of segregation of chromatids during cell cycle, resulting in the gain or loss of whole set of chromosome in an organism, is known as aneuploidy. |
Statement II: | Failure of cytokinesis after anaphase stage of cell division resulting in the gain or loss of chromosome is called polyploidy. |