Why are some pea plants tall while others are short? Explain with reference to the role of genes in controlling characteristics.
Class 10 Biology
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Dhruv00:
r u asking in the 2nd generation
yeah
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some pea plants are tall while some are short
pea plants having TT Tt are tall while plants showing tt is short . this is because T is a dominant trait while t is a recessive trait.
pea plants having TT Tt are tall while plants showing tt is short . this is because T is a dominant trait while t is a recessive trait.
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In the F1 generation
All the plants are hybrid and have Tt genes .They all are tall because tallness is a dominant gene while the dwarfness is a recessive gene.
This is called as Mendel's law of Dominance
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In the F2 generation
When the gametes are formed they separately segregates themselves so that each gamete may get only one of the two alternative factors either T or t and hence F2 plants are both tall and dwarf
Moreover this is called as Mendel's law of segregation
All the plants are hybrid and have Tt genes .They all are tall because tallness is a dominant gene while the dwarfness is a recessive gene.
This is called as Mendel's law of Dominance
--------
In the F2 generation
When the gametes are formed they separately segregates themselves so that each gamete may get only one of the two alternative factors either T or t and hence F2 plants are both tall and dwarf
Moreover this is called as Mendel's law of segregation
hope this helps you
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