CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They combine together, to put together their DNA
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half of the cells copy their DNA twice
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they only keep have their chromosomes
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Detailed explanation-1: -Through fertilization, the egg and sperm are saved: the egg is activated to begin its developmental program, and the haploid nuclei of the two gametes come together to form the genome of a new diploid organism.
Detailed explanation-2: -When an egg and a sperm fuse, they combine into a new cell called a zygote. The zygote contains all the genetic information it needs to become a new individual. This new cell then divides over and over, eventually forming a complete organism with the same genes in each cell.
Detailed explanation-3: -3When sperm meets egg At fertilisation, a cell is formed called a zygote, which then undergoes another type of cell division called mitosis.
Detailed explanation-4: -During meiosis, the cell division process that creates sperm and eggs, matching chromosomes pair up and become connected by “crossing over” with each other, said Neil Hunter, a professor of microbiology at UC Davis and senior author of the new study.
Detailed explanation-5: -When the genetic information from the parents combines together during fertilization, a genetic blueprint is created in the nucleus of the fertilized egg that is the “DNA blueprint”. The fertilized egg duplicates and divides into two identical cells and a copy of the “DNA blueprint” is reproduced in each cell.