Construct a hypothesis to explain the differences you might observe when comparing the karyotypes of normal human cells versus cancerous cells

The karyotype of cancerous cells is abnormal due to the mutations in the DNA. The cell division that occurs in the cancerous cells is similar to the normal cell division. The only difference lies in the check points. The cancerous cells skip the checkpoints where the errors are checked.

Further Explanation:

A hypothesis is the primary explanation that is formed on the basis of limited evidences that support the investigation.

The picture of a person’s chromosome is known as karyotype. The karyotype of a person can be determined by isolation of chromosomes followed by staining and examination of the chromosomes under microscope. The WBC chromosomes are usually isolated, stained and examined. The examined picture under a microscope is taken and the chromosomes are then arranged in the decreasing order of chromosome size. In a normal cell, the mitosis cell division also known as equational cell division is responsible for the increase in the number of cells. The number of chromosomes after the mitotic cell division remains equal to the initial number of chromosomes. Thus, known as equational cell division. In cancerous cells, the abnormal mitosis cell division occurs in which the cell skips the checkpoints which causes abnormal number of mitotic divisions.

Thus, the karyotype of cancerous cells is abnormal due to the mutations in the DNA. The cell division that occurs in the cancerous cells is similar to the normal cell division. The only difference lies in the check points. The cancerous cells skip the checkpoints where the errors are checked.

Learn more:

    •    Learn more about meiosis link

    •    Learn more about scientific theory

         link

    •    Learn more about mitosis and binary fission

         link

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell Division

Keywords:

Hypothesis, evidences, investigation, cancerous cells, mitosis, equational cell division, chromosomes, check points, microscope, mutations, isolation, staining.

corona the outer atmosphere of the sun, temp. may reach 2,000,000 c

chromosphere middle layer of the sun's atmosphere

photosphere visible surface of the sun

convection zone layer of the sun which energy travels by convection from the radiative zone to the photosphere

radiative zone layer of the sun which energy is transferred away from the core by radiation

core very dense center of the sun

nuclear fusion process by which tow or more low-mass atomic nuclei fuse to form another, heavier nucleus.

radiation when energy is transferred as electromagnetic waves

convection the process in which heat is transferred by the circulation or movement of matter

differential rotation the way the sun rotates, rotating faster at its equator than at higher latitudes

sunspots dark areas that form on the surface of the sun

solar flare an explosive release of energy that can extend outward

prominences huge loops of cool gas that extend outward from the photosphere

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