all organisms have the same amount of chromomses.
Different organisms have a different amounts of chromosomes. Therefore, it is false.
The thread-like chromosomes that convey the genomic information from cell to cell are formed of protein and a single DNA molecule. Chromosomes are found in the nucleus of cells in both plants and animals, including humans.
Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule. Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure.
Not all organisms have the same amount of chromosomes, such as drosophila has 4 chromosomes, humans have 46, a dog has 78 chromosomes and an onion has 16 chromosomes. Therefore, it is false.
Learn more about chromosomes, here:
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Answer:
Anaphase of mitosis
Explanation:
Taxol: is a drug that prevents growth of cancer cells by interfering with the disassembling process of microtubules during the Anaphase of mitosis. The drug is able to bind to microtubules and freeze them.
Microtubules: are filamentous proteins and are made up of tubulin subunits. Microtubulesform part of the cell's cytokeleton which is vital for maintaining the shape of the cell and transportation of organelles and other molecules inside the cell.
Anaphaseof mitosis: microtubules from opposite poles of mitotic cells attached at the kinetochore of sister chromatids pull the each sister chromatid to opposite poles thus pulling them apart. The disassembling of the microtubules causes the sister chromatids to pull apart.
The mitotic phase specifically metaphase is of the most interest to a researcher studying Taxol because this drug halts the process of mitosis by preventing microtubules from depolymerizing.
If you were a researcher studying Taxol, you would be most interested in the cells found in the mitotic phase of the cell cycle. Taxol is a drug that disrupts mitosis by binding to the tubulin in microtubules and preventing their depolymerization, which effectively halts the process of mitosis in metaphase. This is because during metaphase, the chromosomes line up along the metaphase plate of the cell and the microtubules attach to the centromeres of the chromosomes, preparing to pull them apart during anaphase. Since Taxol prevents the microtubules from shortening, they cannot pull the chromosomes apart, thus cells treated with Taxol get stuck in metaphase.
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A farmer is breeding Andalusian chickens. He notices that when he mates a black chicken with a white chicken, the offspring are spotted black and white and look blue in color. This is because the allele for the black color is as dominant as the allele for the white color. The punnett square in the image shows the cross between the two types of chicken. This is called codominance of the alleles when both the gene types get expressed in the progeny resulting in a mixed phenotype.
A) Guaiacol
D) Tetraguaiacol
B) Peroxidase E) Hydrogen peroxide
C) buffer
Answer:
E) Hydrogen peroxide
Explanation:
Hydrogen peroxide is the substance that has a brown color and is detected by the spectrophotometer in our reaction.