BIOLOGICAL BASES OF BEHAVIOR
BEHAVIOR GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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learned behavior
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inherited trait
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Either A or B
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None of the above
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Detailed explanation-1: -It was concluded that the shape of leaf tip is under the control of two genetic loci with duplicate genes interaction without cumulative effect. In that case obtuse shape of leaf tip is a double recessive homozygote.
Detailed explanation-2: -(2014) and Gupta et al. (2019) showed that many leaf shape traits, including venation patterning, are highly heritable and that genes displaying differential expression can be identified between cultivars with contrasting leaf shapes.
Detailed explanation-3: -As the leaf grows away from the meristem, its shape is determined by growth in three axes, proximal-distal, abaxial-adaxial and medial-lateral. HD-ZIPIII, KANADI and the small RNA pathway play a significant role in the latter two axes. KNOX proteins play a role in the proximal-distal axis.
Detailed explanation-4: -The leaf is an important organ for plant photosynthesis, respiration and transpiration. Its size and shape will affect photosynthetic efficiency and plant growth closely related to plant growth potential, nutrient supply, yield, quality and resistance [1].