Answer: Option [D]The human chromosomes are divided into 7 groups. B-chromosomes are 4-5. Group B chromosomes include chromosomes 4 and 5. These are large and are submetacentric.
Answer: Option [D]The correct answer is M phase. In metaphase, the maximum condensation of chromosomes is observed and they are arranged in a row near the equatorial position.
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Answer: Option [C]Gene can be defined as unit of recombination.
Answer: Option [D]Lampbrush chromosomes are a special form of chromosome found in the growing oocytes (immature eggs) of most animals, except mammals. It is most prominently seen in the diplotene stage of prophase I of meiosis.
Answer: Option [B]The correct answer is banding technique. In metaphase, chromosomes can be identified using certain staining techniques, so called banding. Cells are cultured and then stopped in metaphase to maximize the number of suitable cells. They are then spread on a slide, stained with a suitable dye and visualized in the microscope.
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