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about 30-36 hours after fertilization

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Q: A zygote undergoes its first mitotic division or cleavage and becomes a two-celled embryo?
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The series of cellular divisions by which the zygote becomes a multicellular embryo is known as?

The answer is Cleavage because Cleavage is the first mitotic divisions of the zygote. There is an increase in the number of cells but a decrease in size of the individual cells.


How is the division of the cytoplasm different in the plants and animals?

Plants:A cell plate starts to form in the cleavage point.The cell plate eventually becomes a cell wall.Animals:During Telokinesis, the Cytoplasm starts to "pinch" at a cleavage point. Then, it splits.


Another name for cell division is the phase?

The larger cell becomes, the efficiently it is able to function


Whats the difference between morula and blastula?

An egg undergoes cell division and starts to become an embryo after fertilization. One cell divides into two, these then cleave into four, those four cells become eight, and so on. When there are a hundred or more cells, the embryo becomes a solid mass of cells called a morula. In most species the mass next transforms into a hollow sphere called a blastula.


The division of the nucleus in reproductive cells is called?

Mitosis is the division of cell's nucleus and results in two identical daughter cells, whereas meiosis is where the nucleus divides to form 4 gametes (in females, only 1 survives). These daughter cells are different from each other. Meiosis, on the other hand, is the division of cell's nucleus which results in 4 different cells. In males, All four becomes sperm. In females, all but one becomes egg.

Related questions

The series of cellular divisions by which the zygote becomes a multicellular embryo is known as?

The answer is Cleavage because Cleavage is the first mitotic divisions of the zygote. There is an increase in the number of cells but a decrease in size of the individual cells.


What happens to gas when it contracts?

It undergoes phase change and becomes a liquid.


What is the surface change from liquid to gas?

Liquid undergoes evaporation when it becomes a gas.


How is the division of the cytoplasm different in the plants and animals?

Plants:A cell plate starts to form in the cleavage point.The cell plate eventually becomes a cell wall.Animals:During Telokinesis, the Cytoplasm starts to "pinch" at a cleavage point. Then, it splits.


Is something has metamorphosed it has?

changed into it's next state. A caterpillar undergoes a metamorphosis, and becomes a butterfly.


How do you convert a division into a fraction?

The divisor becomes the denominator and the dividend becomes the numerator.


How could metamorphic rock become a sedimentary rock?

When sedimentary rock undergoes enough heat and pressure, it becomes metamorphic rock. A classic example of this is when shale becomes slate.


What kind of leaf venation does coriander have?

it undergoes environmental leaf modification,initially it is unifoliate later it becomes multifoliate


How does a college get its division rating?

A college gets its division rating by determining the number of wins and the number of losses by that particular college. From that, there is a percentage figured out and that becomes the division rating.


Which stage of the cleavage is the chromosome diploid?

G1 phase of Interphase in mitosis. It's after cytokinesis and before S phase in which the chromosome replicates and becomes 4n. In Meiosis it's before Prophase I and after Telophase I when cytokinesis occurs; then all through Meiosis II until final cell division in which 4 daughter cells that are haploid are made.


An immature stage in the life cycle of many invertebrates which undergoes dramatic changes in its body plan before it becomes an adult it is known as?

A larva


Why does the object in the water becomes bigger?

It undergoes imbibition if it is hydrophilic in nature but if its not it simply looks bigger due to refraction of light.and its refracted to our eyes,