Large numbers of gametes
Fertilization results in a zygote which turns into an embryo, then a fetus, and then a baby -insert animal species here.-
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
Meiosis maintains the normal diploid number by halving the number to make the gametes and then allowing the diploid number to be restored through fertilization. For example in humans: Germ cells undergo meiosis --> Sex reproduction 2n germ cells --> 1n gametes --> 2n fertilization
Reproduction
Gametes fuse together during fertilization.
chromosomes
Fertilization results in a zygote which turns into an embryo, then a fetus, and then a baby -insert animal species here.-
Fertilization is important so species can have genetic variation. It is also important so the species can pass on their genes.
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
Total number of chromosomes remain same in same species of organism through meiosis process. In meiosis process the number of chromosomes are reduced to half as a result in gametes only one set of chromosomes will be present. In this process chromosomes are same.....
If meiosis did not occur then the chromosome number would double each generation, and the cell could not survive with this increasingly larger number of chromosomes.
Reproduction is important to the survival of evey species
Reproduction is important to the survival of evey species
To expand the natural range of the plant species.
In some species there is external fertilization. In other species there is live birth. Live birth requires internal fertilization.
Species survival is not dependent on asbestos.