Which is the male genotype in the zw sex chromosome system. a. zy b. zz c. xz d. zw

The correct answer is B. ZZ

The sex chromosomes in birds are depicted as Z and W. In most of the bird species, the Z chromosome is large and contains almost all the sex-linked genes whereas, the W sex chromosome is much smaller have a high proportion of repeat sequence DNA. The male bird is homogametic having genotype (ZZ) and the female bird is heterogametic (ZW).  

rtgh gf tfg sxzt hgstr hsd gh trh fhrd rd

i think that it is c, d, and e, hope this