how do genes control the characteristics of tallness of a plant
Answers
Answer:
plant growth depends on a particular plant hormone.More the plant hormone secreted...More taller will the plant be.Now,consider an enzyme which makes that plant hormone.If the gene makes protein such that the enzyme secretes more hormone the plant will be tall as a result.But is the gene has an alteration,Then the hormone will be made less and as a result...The plant will be dwarf.Hence,We can say that genes control characteristics of calmness of a plant.
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Answer:
A gene is the section of DNA on a chromosome which codes for the formation of a protein controlling a specific characteristic (or trait) of the organism. Suppose a plant progeny has gene for the characteristic called ‘tallness’. Now, the gene for tallness will give instructions to the plant cells to make a lot of plant growth hormones.
And due to the formation of excess of plant growth hormones, the plant will grow much and hence become tall. On the other hand, if the plant has the gene set for dwarfness, then less plant growth hormones will be produced due to which the plant will grow less, remain short and hence become a dwarf plant.
Just like plants, the characteristics (or traits) in animals (including human beings) are also transmitted from the parents through genes by the process of sexual reproduction. We will now give an example of the transmission of colour of hair from the parents (father and mother) to the child. Before we do please keep in mind that black hair is a phenotype produced by the genotype HH or Hh. On the other hand, blonde hair (pale yellow hair) is a phenotype produced by the genotype