CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is a trait for which the plant has no genes.
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It is a trait that is usually detrimental to plant survival.
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It is a trait that developed in response to temperature variations.
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It is a trait that is only expressed under particular environmental conditions.
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Detailed explanation-1: -A plant growing on a hillside has a stem that curves so that the plant is vertical. This curve is not observed in plants of the same species growing on level ground. Which statement best explains the curved stem of the plant growing on the hillside? It is a trait for which the plant has no genes.
Detailed explanation-2: -Which statement best explains the curved stem of the plant growing on the hillside? it is a trait that is only expressed under particular environmental conditions.
Detailed explanation-3: -Recombination in meiosis. Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.
Detailed explanation-4: -The process of mitosis generates new cells that are genetically identical to each other. Mitosis helps organisms grow in size and repair damaged tissue. Some species of algae are capable of growing very quickly. The giant kelp Macrocystis pyrifera can grow as much as 30 centimeters (cm) in length in a single day.
Detailed explanation-5: -Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical-without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!