Identical twins are formed when one egg is fertilized by one sperm in the fallopian tube, forming a single zygote.Before implantation, in the blastocyst phase, it splits into two pregnancies, says Dr. Richlin. "Identical twins are of the same sex with the same inherited characteristics." The...
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What are the genetic processes in plants? When does fertilization occur in flowers? How does meiosis create genetic diversity? How does crossing over lead to recombinant gametes? How is a zygote formed? How is DNA related to reproduction?
If sexual reproduction in humans occurs correctly, the gametes formed by meiosis are ___ & the zygotes formed by fertilization are ___. Explain. Describe the processes of fertilization, implantation, pregnancy, and childbirth. ...
development of zygote after fertilization, the zygote is formed. the zygote divides mitotically to form 2, 4, 8, 16 celled stages. these cells are known as blastomeres. embryogenesis this stage is also known as embryonic development or the development of an embryo. at this stage, the actual...
A zygote is the simplest form of life, so once a zygote is formed, it proceeds to split and divide into new cells that organize and form more complex structures. Around 30 hours after the zygote is formed, the process of mitosis (cell division) begins, which increases the number of ce...
Pollination is the movement of pollen grains from the anther to the stigma of the same or a different flower. A zygote is formed when the male and female gametes fuse. Cell division changes the zygote into an embryo, which grows to become a seed, and the ovary develops into a fruit. ...
Once the zygote starts to grow, the ovary begins developing into a fruit and the ovules begin to form seeds. The outside wall of the ovary and pistil becomes the skin of the fruit, or in some cases like the apple and pear, there develops a fleshy and edible material outside the ovary...
Most triplets are trizygotic, meaning that each individual formed from a separatezygote, or egg and sperm combination. They are commonly described as "fraternal" multiples and share the same genetic similarities as any siblings. However, it is not uncommon for triplets to be dizygotic, which occu...
How is a zygote formed? How many chromosomes are in a sex cell? How many daughter cells are produced from each parent cell during meiosis? What causes a chemical pregnancy after IVF? How many diploid cells do humans have? How many copies of each chromosome are in a human zygote?