0
- During cleavage G1 and G2 stages are by-passed so cells simply progress from S (DNA synthesis) to M (mitosis) without the intervening growth phase
- As a result cleavage cells continue to decrease in sizeuntil they approximate the size of normal somatic cells
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
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.
Does the size of the embryo change as cleavage progresses?
biology
What differences are between the onion root tip and whitefish embryo in size of the cells?
.......... Did Ben ask this??????
At what stage does an embryo become larger than the zygote?
After cleavage finishes, the cell cycle continues as normal - cell division slows, yet cells grow in size instead of just continually dividing. This is when gastrulation begins (the in-folding of the hollow blastula into multiple germ layers forming the ectoderm, mesoderm, and endoderm).
What is the main way that an embryo gets bigger?
The cells are known as stem cells meaning they can become any cell type. The embryo becomes bigger because certain genes in the DNA are activated allowing the cell to divide or produce certain determination factors that will make a stem cell become a neuron, muscle cell, etc.... The embryo grows in size as the stem cells divide repeatedly and then some of the stem cells become actual specific cells.
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.
Does the size of the embryo change as cleavage progresses?
biology
By what process does the embryo divide with no increase in size?
Mitosis or cleavage
What is the name of the two poles created as a result of holoblastic cleavage?
Hand Pole and Mouth PoleIn embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula.Depending mostly on the amount of yolk in the egg, the cleavage can be holoblastic (total or entire cleavage) or meroblastic (partial cleavage). The pole of the egg with the highest concentration of yolk is referred to as the vegetal pole while the opposite is referred to as the animal pole.
In sea star development what is happening to the size of the cells as cleavage takes place and cell numbers increase?
the cells get smaller as they split
What differences are between the onion root tip and whitefish embryo in size of the cells?
.......... Did Ben ask this??????
During cleavage furrow why do the cells get smaller?
Cleavage furrow, which is what is shown during cytokinesis, "makes the cell smaller" because it is dividing it in two. During interphase, the cell had to enlarge its size by almost double, and cytokineses divides it into normal sized cells.
At what stage does an embryo become larger than the zygote?
After cleavage finishes, the cell cycle continues as normal - cell division slows, yet cells grow in size instead of just continually dividing. This is when gastrulation begins (the in-folding of the hollow blastula into multiple germ layers forming the ectoderm, mesoderm, and endoderm).
Why do the cells in an embryo grow no larger than a certain size before they divide?
If get to larger then the nutrients cant pass through
What is the main way that an embryo gets bigger?
The cells are known as stem cells meaning they can become any cell type. The embryo becomes bigger because certain genes in the DNA are activated allowing the cell to divide or produce certain determination factors that will make a stem cell become a neuron, muscle cell, etc.... The embryo grows in size as the stem cells divide repeatedly and then some of the stem cells become actual specific cells.
Why is the chick embryo smaller than that of a human?
Embryo size depends upon size of animal .
What process of rapid mitotic cell division without intervening growth periods?
This process if known as cleavage. The cells divide rapidly, but there is no overall increase in the size of the zygote.
