The longitudinal halves of a chromosome that has undergone replication are known as chromatids. They will not be called chromosomes until after they are separated during Mitosis. Mitosis distribute the chromatids to daughter cells as a cell divides. The chromosomes are initially replicated in cells undergoing Meiosis, as in preparation for the mitotic division, but then, these chromosomes are divided twice so that four daughter nuclei are produced, each having the haploid chromosome number.
applications of biotechnology in the field of agriculture and medicine are:
Antibiotics are created from the plants for human and animal use. An antibiotic protein in stock feed is more cost-effective than traditional antibiotic production.
It helps in the production of genetically modified crops that produce crops with desired characteristics.
Gene therapy is used for the diagnoses of diseases like cancer and Parkinson’s disease.
Genetic testing is another technique that is used to diagnose any genetic diseases in theparents.
DNA fingerprinting is used in the identification of criminals and solving paternity disputes.
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The term applied when water passes through a selectively permeable membrane from an area of high to low concentration is called osmosis. Osmotic pressure is defined as the amount of external pressure that is required to stop the net movement of the solution across the semi permeable membrane. In terms of biology, osmosis has great importance as most of the membranes in our body are semi permeable. Permeability depends on several factors such as charge, solubility, solute size and chemistry. Osmosis is the process that provides the primary means through which water travels in and out of the cells.
The correct answer is D. Tortoises and snails have analogous organs, and they don't belong to the same species.