Answer:
The X and Y sex chromosomes
Explanation:
The zygote, a single cell, implants its self to the uterine wall and it developes into an embyro which is a cluster of cells.
Because chromosome X carries these genes which lead To catch these diseases.
males catch these disease more than females because they have 1. chromosome X but females has 2 .
so the Recessive trait appear in males more than females .
It's the nucleus as it contain the DNA
Answer:
23, haploid
Explanation:
there are 23 chomrosomes in both a egg and sperm cell
this makes them haploid as they have a single set of unpaired chromosomes
hope this helped
