REPRODUCTION
EMBRYONIC DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The joining of a sperm cell and an egg cell is called ____
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Fertilization
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Labor
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Zygote
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STOP ASKING ME THESE IMPOSSIBLE QUETSIONS!!
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Explanation:
Detailed explanation-1: -Once fertilized, the egg is called a zygote. Fertilization is not complete, however, until the two haploid nuclei (called pronuclei ) have come together and combined their chromosomes into a single diploid nucleus.
Detailed explanation-2: -fertilization, union of a sperm nucleus, of paternal origin, with an egg nucleus, of maternal origin, to form the primary nucleus of an embryo.
Detailed explanation-3: -Contact between the egg and sperm is random. Once the egg arrives at a specific portion of the tube, called the ampullar-isthmic junction, it rests for another 30 hours. Fertilization-sperm union with the egg-occurs in this portion of the tube. The fertilized egg then begins a rapid descent to the uterus.
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