Genetics And Plant Breeding - Study Mode

[#846] The term genetics is coined by
Correct Answer

(B) Bateson

Explanation

Solution: The term genetics is coined by Bateson. William Bateson (8 th August 1861 - 8 th February 1926) was an English biologist who was the first person to use the term genetics to describe the study of heredity and the chief populariser of the ideas of Gregor Mendel. Genetics is the study of genes, genetic variation, and heredity in organisms. Trait inheritance and molecular inheritance mechanisms of genes are primary principles of genetics.

[#847] Synthesis of IAA in plants requires
Correct Answer

(C) Zinc

Explanation

Solution: Synthesis of IAA in plants requires Zinc. Plants also require zinc for the synthesis of tryptophan, a key amino acid in the synthesis of the auxin indoleacetic acid (IAA). Therefore, zinc also operates in the control of plant development through its indirect action on auxins.

[#848] Star Link is most loosely related with which of the following terms?
Correct Answer

(A) Cry9

Explanation

Solution: Star Link is most loosely related to Cry9. StarLink is a brand of genetically modified maize containing two modifications a gene for resistance to glufosinate and a variant of the Bacillus thuringiensis (Bt) protein called Cry9C. Cry9C had not been used in a GM crop before StarLink, causing heightened regulatory scrutiny.

[#849] Top cross-method was first suggested for evaluation of inbreads by
Correct Answer

(B) Davis (1927)

Explanation

Solution: The top cross-method was first suggested for the evaluation of inbreds by Davis (1927). Davis suggested the top crosses methodology, which consists of combining a large number of inbred lines. In the top cross, crosses are made between inbreds and either a tester or an open-pollinated variety. This is also known as an inbred-variety cross.

[#850] A : T ratio in one strand of DNA duplex is 2, what will be the ratio in the complementary strand
Correct Answer

(B) 0.5

Explanation

Solution: A : T ratio in one strand of DNA duplex is 2, and the ratio in the complementary strand will be 0.5.