Step-by-step explanation:
1) Mothers transmit Y chromosome genes to: neither sons nor daughters
In humans, the females are homozygous for sex chromosomes and are XX. Since they do not have the Y chromosomes, therefore, they neither transmit the chromosomes to boys or girls.
2) Fathers transmit X chromosome genes to: only daughters
In humans, the males are heterozygous for sex chromosomes that is they are XY and will transmit their X chromosome only to daughters as the Y chromosomes are male determining chromosome.
3) Mothers transmit mitochondrial genes to: both sons and daughters
Mothers transmit the mitochondrial gene to both the sons and daughters as the mitochondria is an organelle which is transmitted from the mother independent of the sex of the offspring.
4) Mothers transmit z chromosome genes to: only sons
In birds, the males are homozygous and are ZZ and the females are the ZW. The females transmit the Z chromosome to the sons as the W chromosome is the female determining chromosome.
5) Mothers transmit W chromosome genes to only daughters
Mothers transmit the W chromosome always to daughter as the W chromosome is involved in the sex determination.