Botany MCQs for NEET — Practice Questions with Answers

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A wrinkled, pure yellow seeded pea plant is crossed with pure round, green seeded pea plant. Calculate the percentage of progeny with wrinkled green seeds.

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Explanation

The allele which is unable to express its effect in the presence of another is called AIPMT - 1991

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Explanation

A recessive allele is one that is unable to express its effect in the presence of a dominant allele. In other words, the effect of a recessive allele is masked by the presence of a dominant allele. This is a fundamental concept in Mendelian genetics.

select the mismatch 

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Explanation

rhodospirullum is a free living nitrogen fixer 

A : Leguminous plant are grown between crops to increase yeild. R : Rizobiumbacteria are present in the root - nodules of Leguminous plant.

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Name the conjugated protein used as genetic material in living cells

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Explanation

Nucleoproteins are conjugated proteins that include nucleic acids, which serve as the genetic material in living cells. These proteins play a crucial role in the storage and expression of genetic information.

Who supported Griffith effect by molecular explanation ?

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Explanation

Avery, McCarty, and MacLeod provided molecular evidence supporting Griffith's experiment. They demonstrated that DNA is the substance that causes bacterial transformation, thereby identifying DNA as the genetic material.

Synthesis of nucleic acids always takes place in

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Explanation

The synthesis of nucleic acids, including DNA and RNA, always occurs in the 5' to 3' direction. This is because DNA polymerases and RNA polymerases add nucleotides to the 3' end of the growing chain.

DNA Chain initiation phase during replication is

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Explanation

During DNA replication, the initiation phase involves the formation of the replication fork. This is where the DNA double helix is unwound, allowing each strand to be copied.

What is called Griffith effect ?

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Explanation

The Griffith effect, also known as bacterial transformation, refers to the process where one strain of bacteria is changed by a gene or genes from another strain of bacteria. This was first demonstrated by Frederick Griffith in 1928.

Genetic information is carried by the long chain molecules which are made up of

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Explanation

Genetic information is carried by long chain molecules called nucleotides. These nucleotides form the structure of DNA and RNA, which store and transmit genetic information.

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