Identify the disease on basis of following characters.
$(1)$ Short statured with small round head.
$(2)$ Furrowed tongue and partially open month.
$(3)$ Palm is broad with characteristic palm crease.
Down's syndrome
Klinfelter's syndrome
Turner' syndrome
Sickle cell anaemia
In man sometime during gametogenesis sex chromosomes are not separated themselves on account of which chromosome number becomes $45, 47$ or $48$. In this condition which of the following genotype and phenotype is correct
An abnormal human male phenotype involving an extra $X$ chromosome $(XXY)$ is a case of
Match the following:
Column – I | Column $- II$ |
$(1)$ Failure of cytokinesis | $(p)$ To study in beritance of particular traits |
$(2)$ Trisomy of 21 | $(q)$ Polyploidy |
$(3)$ Error of metabolism | $(r)$ Down's syndrome |
$(4)$ Pedigree analysis | $(s)$ Phenylketonuria |
Give differences : Mendelian disorders and Chromosomal disorders
Turner's syndrome in human is caused by