Genetics and Plant breeding pointers 17 ✓

 

 

• Translocation homozygotes leads to alternation in linkage groups.
• Transposons are class II transposable elements and retrotransposon are class I transposable elements.
• Transposons contain DNA sequences and these don‘t have RNA.
• Triple test cross given by kersey and jinks.
• Triplet sequence found in mRNA which codes for single amino acid? Codon
• Triplet sequence in t-RNA? Anticodon
• Trisomy of chromosome 13 in humans leads to? Patau’s syndrome
• Triticale is example of intergeneric polyploidy.
• Triticlae is the cross between Triticum aestivum and Secale cereale.
• True water potential is measured by porometer.
• TTC is extension of NCD 3.
• Twins showing similar phenotypes for a trait is called as? Concordance
• Tyrosine, phenylalanine and tryptophan are the three aromatic amino acids (AAA) involved in protein synthesis.
• Under which phase chromosome and DNA replication takes place— S phase.
• Under which phase chromosomes can be easily counted and their size and shape can be determined Metaphase.
• Under which phase protein and RNA synthesis takes place—G1 phase and G2 phase.
• Under which phase the chromosome gets more condensed Anaphase.
• Union of two dissimilar gametes is called as — Heterogamy.
• Union of two similar gametes is called as — Isogamy.
• Unit of inheritance located at a fixed position on a chromosome is Gene.
• Unstained and dividing cells are studied using? Phase contrast microscope
• UPOV act 1961.
• Use of genetic factors to make male gamete non-functional is called as? Genetic emasculation.
• Use of synthetics in maize was suggested by for the 1st time.? Hayes & Garber.
• Value of regression and correlation is same when two variables are perfect.
• Varalaxmi cotton hybrid is cross between Gossipium hirsutum and Gossipiyum barbadense.
• Varalaxmi cotton was developed by UAS Dharwad.
• Variation observed in in-vitro cultured plants is called as? Somaclonal variation.
• Vertical axis of graph (Y-axis) is called? Ordinate.
• Vertifolia is a variety of? Potato.
• Vacuole sac is bounded by a single membrane called Tonoplanst.
• Variety of rice resistant to Drought is CO 31.
• Variety of rice suitable for export is Basmati 370.
• Watson and Crick gave double helical structure of DNA.
• We can’t determine the mating system based on one season data or single population and we have to follow law of averages to find the mating system.
• Western blot is protein based, southern blot is DNA based, northern blot is RNA based.
• What does GEAC means? Genetic Engineering Approval Committee.
• What is meant by HYV? High Yielding Varieties.
• What is possible number of straight crosses along with reciprocals with 10 inbred lines is? 90.
• What is the embryogenesis? It is the process of formation of somatic embryos from callus.
• Wheat variety resistant to all the three rust is? Sparrow, Chotti lerma.
• When all the component lines are resistance against the effective pathogen in a multiline variety then that is called as clean crop approach.
• When an introduced material is set to selection or hybridization it is called as? Secondary Introduction.
• When correlation and regression are same then it is perfect.
• When female matures before male? Protogyny.
• When it passes below the origin it donates presence of over dominance.
• When non-homologous centromeres move to one pole it is? Adjacent-1 disjunction.
• When passes above the origin and touching limiting parabola then suggest absent of dominance.
• When passes above the origin then indicate partial dominance.
• When pathogen genes are matched with all resistance genes in the host, it produces? Susceptibility.
• When RBC‘s have antigen A on their surface and antibody B on serum the blood group is? A Blood group.
• When the fertility gradient of the field is in two directions the most appropriate experiment design is LSD.
• When the number of treatments are sufficiently large and can form square the best suited design is lattice design.
• Which cell organelle is called as Power house of the cell? Mitochondria.
• Which cell organelle is found in both prokaryotic and eukaryotic cells? Ribosome.
• Which is known as functional unit of life? Cell.
• Which is shortest phase of Mitosis? Anaphase.
• Which is the first inter-genetic cross made by Rimpu in 1890? Triticale.
• Which is the progeny of breeder seed? Foundation Seed.
• Which is the site of protein synthesis? Ribosome.
• What is sorghum poisoning: The aerial shoot of sorghum contains the cynogenic glycoside dhurrin, which by enzyme action hydrolizes to give hyrocyanic acid, (HCN).
• Wheat revolution in India was started by-M.S. Swaminathan.
• Wheat revolution in World was started by- Norman Borlaug.
• When aberrations remain confined to a single chromosome of a homologous pair, they are called Intrachromosomal/homosomal aberrations.
• When all the individuals which carry a particular gene exhibit its phenotypic effect is called as complete Penetrance.
• When an inbred is crossed with an open-pollinated variety it is known as—Top cross.
• When cross is made with an inbred hybrid, synthetic or open-pollinated variety the common parent used in the test-cross is known as – Tester.
• When pollen from a flower of one plant falls on the stigmas of other flowers of the same plant, it is known as — Geitonogamy.
• When pollen grains from flowers of one plant are transmitted to the stigmas of flowers of another plant, it is known as —Cross pollination or Allogamy.
• When recessive alleles at either of the two loci mask the expression of dominant alleles at the two loci it is called as duplicate recessive epistasis.
• When the introduced variety is well adapted to the new environment, it is released for commercial cultivation without any alteration in the original genotype is called as — Primary introduction.
• When the pollen falls onto the stigma of a flower, it is known as — Pollination.
• When the species belong to two different genera, it is called as Intergeneric hybridization.
• When two species of the same genus are crossed, it is known as Interspecific hybridization.
• Which is first hybrid of sunflower in India — BSH 1.
• Which one is called as wonder Rice – IRS.
• Which one is red grain variety of sorghum — Paiyur 2.
• Which plant exhibits both monoecy and protandry — Maize.
• Which type of pigment present is in cotton seed — Gossypol.
• Which type of pollination occur in the maize plant — Cross pollinated.
• Which variety of rice is resistant to Blast disease — IR 20, CO 37, CO 25.
• Which variety of rice is resistant to cold temperature - MDU 2, Japonica rice.
• Which variety of rice is resistant to Stem borer — TKM 6, IR 20.
• Who coined the term Mitosis and he was the first to study cell division —Flemming (1882).
• Who developed individual plant selection method – Nilson Ehle.
• Who discovered nucleus in the flowering plants Robert.
• Who discovered reverse transcription Temin and Baltimore (1970).
• Who discovered transposons/jumping genes in Maize Barbara Mc Clintock.
• Who first reported on sex linkage in the Drosophila — T.H. Morgan (1910).
• Who gave the statement "Genes must be carried on the chromosomes" Sutton & Boveri”.
• Who gave this statement 'Law of Homologous Series in Variation'---- N.I. Vavilov.
• Who is father of hybrid rice — Yuan Long Ping.
• Who proposed centres of origin - N.I. Vavilov(1926).
• Who proposed germplasm theory Weismann.
• Who proposed mitosis in cell - Flemming.
• Who Proposed the central Dogma of Molecular Biology F.H.C. Crick (1958).
• Who proposed the multiple factor hypothesis for the inheritance of quantitative characters Nilson-Ehle.
• Who proposed the pureline theory – Johannsen.
• Who was the first to point out the reduction of chromosome number in the reproductive cells- Weisman.
• Wild species of sugarcane-Wild cane (2n=40-128): S. spontaneum, Wild cane (2n=60-194): S. Robustum
• Wilson and Steve's discovered sex chromosomes in Melandrium.
• Within the large centres of diversity, small areas may exhibit a much greater diversity than the centre as a whole; these areas are known as— Microcentres
• World's first chromosome map was produced by — Alfred Sturtevant (1913).
• World's first pigeon pea hybrid is ICPH 8.
• Wright discovered first mutation in lamb.
• Wright divided genetic variance into additive and non additive components.
• Which organelle of cell is known as dustbin of cell? Vacuoles.
• Which organelle of cell is known as engine of cell? Ribosome.
• Which organelle of cell is known as suicidal bag of cell? Lysosome.
• Which organelle of cell is non-living? Cell wall.
• Which organelles of cell are found only in plants? Plastids, Spherosome.
• Which plastid of cell is responsible for colour in plants? Chromoplast.
• Which plastid of cell is responsible for photosynthesis in plants? Chloroplast
• Which soil borne bacterium is used for development of transgenic plants? Agrobacterium tumefaciens.
• Which technique is used to minimize the expression of gene? Antisense RNA Technology.
• Which type of cell found in bacteria and BGA? Prokaryotic cell.
• White bud of maize is due to deficiency of zinc.
• White colour is for foundation seeds.
• White revolution - Milk production.
• Who developed the concept of vertical and horizontal resistance? J E Vander Plank.
• Who is known as father of plant genetic resources? N.I. Vavilov.