the temperature of your body cells
It occurs in a sexual reproduction. I hope this answers your question!!
Fertilization of eggs in butterfly reproduction occurs during a vigorous mating ritual. The female butterfly then lays and abandons her eggs.
Mitosis
monohybrid cross
Fertilization occurs when a sperm and egg fuse together during reproduction. The stage that the fertilized egg is termed an embryo occurs about 1 day after conception.
During fertilization the sperm unites with the egg. This typically occurs in the fallopian tube.
it occurs when it occurs
Reproduction.
Meiosis generates variations due to activities like independent assortment of chromosomes, crossing over and random fertilization that occur during the process. Meiosis occurs during sexual reproduction.
Fertilization occurs internally. The fertilized eggs are then released and mature externally.
They form a zygote. A zygote is a single cell with the full (diploid) complement of chromosomes. In the case of a multicellular organism the zygote will multiply into a mass of daughter cells called an embryo.
If your question is what happens during fertilization? the answer varies. If your are speaking about sexual reproduction then fertilization occurs when the sperm and egg combine. Basically the first sperm to get to the egg keeps it. The egg hardens to keep excess sperm from entering. (of course some errors can occur which will lead to defects, twins, triplets, etc.) There are many other phases to the reproduction process but fertilization is basically when the egg and sperm combine.