GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The sunflower received more water than the tulip plant.
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The sunflower received more fertilizer than the tulip plant.
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The sunflower received more sunlight than the tulip plant.
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Sunflower genes carry traits for taller stems than the tulip genes.
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Detailed explanation-1: -Sunflower is the first plant species in which the genes that control tocopherol content in seed were identified. These are two independent genes, Tph1 and Tph2 (Popov et al., 1988). Gene Tph1 controls the ratio between -and -tocopherol, and the Tph2 gene between -and -tocopherol.
Detailed explanation-2: -Sunflower has also undergone both selection and genetic drift during domestication and improvement, which has reduced its genetic diversity [10, 11], with modern cultivars retaining 50–67% of the diversity that is present in wild H. annuus populations [12, 13].
Detailed explanation-3: -The genotype of a plant affects its growth. For example, selected varieties of rice grow rapidly, maturing within 110 days, whereas others, in the same environmental conditions, grow more slowly and mature within 155 days. A producer has control over the genetic factor by his choice of variety.
Detailed explanation-4: -Sunflowers have a diploid (2n) number of 34. Complete each sentence with the correct number of chromosomes or chromatids in each stage of meiosis.