Genetics And Plant Breeding - Study Mode
[#336] Poorva, Urja and Pusa Vishesh are new varieties of
Correct Answer
(B) Wheat
Explanation
Solution: Poorva, Urja, and Pusa Vishesh are new varieties of Wheat. Poorva is the variety of wheat released by IARI New Delhi, a Timely sown variety, and Irrigated for the NEPZ region. Urja is For late sown conditions, Irrigated conditions for the CZ region, and is Released by IARI New Delhi. Pusa Vishesh is Released by IARI New Delhi, For timely sown conditions, and Irrigated conditions of the Delhi region.
[#337] Protogyny is found in
Correct Answer
(C) Bajra
Explanation
Solution: Protogyny is found in Bajra. Protogyny, the situation in which the pistils mature first, occurs in arum lilies and many wind-pollinated plants, such as grasses-although several types of grass are self-pollinated, including common varieties of wheat, barley and oats. In Bajra, Stigma becomes receptive earlier to stamens.
[#338] Harshey and Chase in their experiments labelled DNA with
Correct Answer
(C) 32 P
Explanation
Solution: Hershey and Chase in their experiments labeled DNA with 32 P. The lack of 32 P-labeled DNA remaining in the solution after the bacteriophages had been allowed to adsorb to the bacteria showed that the phage DNA was transferred into the bacterial cell. Hershey and Chase were also able to prove that the DNA from the phage is inserted into the bacteria shortly after the virus attaches to its host.
[#339] rDNA analysis provides information on
Correct Answer
(A) Phylogenetic relationships
Explanation
Solution: rDNA analysis provides information on Phylogenetic relationships. Ribosomal DNA (rDNA) is a DNA sequence that codes for ribosomal RNA. These sequences regulate transcription initiation and amplification and contain both transcribed and non-transcribed spacer segments. The genes that are responsible for encoding the various sub-units of rRNA are located across multiple chromosomes in humans.
[#340] RFLP is a
Correct Answer
(B) Molecular marker
Explanation
Solution: RFLP is a Molecular marker. RFLP, as a molecular marker, is specific to a single clone/restriction enzyme combination. Most RFLP markers are co-dominant and highly locus-specific. Such variation results in different-sized (or length) DNA fragments produced by digesting the DNA with a restriction enzyme. RFLPs can be used as genetic markers, which are often used to follow the inheritance of DNA through families.