Answer:
Explanation: yes would cause problems with the embryo because a sperm and egg have 23 chromosomes each half mom half dad.
Answer:
they build up over time making its shape
Explanation:
During meiosis crossing over occurs at the pachytene stage, when homologous chromosomes are completely paired. At diplotene, when homologs separate, the sites of crossing over become visible as chiasmata, which hold the two homologs of a bivalent tighter until segregation at anaphase.
Answer:
I want to say it's radiation but I'm not sure