Practice Plant Breeding Questions and Answers

• In what stage of meiosis are lamp brush chromosomes predominantly observed, and what is their unique feature?
• During anaphase, the significance of sister chromatids separating and moving towards opposite poles is?
• In a breeding program focused on introducing a pest resistance gene into a commercial crop species, what is the most efficient breeding method if the donor...
• Term which refers to the pairing of homologous chromosomes during meiosis and is essential for crossing over?
• Term for the distance on a chromosome that permits one percent recombination (crossing over) between two linked genes is?
• The variation in the restriction DNA fragment lengths between individuals of a species is called:
• The term given to the ability of single cell to divide and produce all the differentiated cell in the organism.
• The term that describes as sharp reduction in a genetic variation in a population following migration to and colonization of new area by a species is calle...
• Number of Nuclei present in a fully developed pollen grain after division of generative cell :
• Reverse transcription was first reported by ……………., who won the noble prize in 1975.
• "Black Spot" disease in roses is caused by which pathogen?
• What term is used to describe a new plant produced through vegetative reproduction?
• What term is used to describe the population that results from the sowing of hybrid seeds?
• Which hormone is primarily responsible for inducing the oestrus or heat period in female animals, a phase of their reproductive cycle characterized by rece...
• According to Mendel's law of independent assortment, a dihybrid cross between two heterozygous parents produces an F2 phenotypic ratio of:
• To determine whether a plant showing a dominant phenotype is homozygous or heterozygous for a particular gene, a breeder crosses it with a plant that is ho...
• When a heterozygous plant is crossed with its homozygous recessive parent, so that the alleles carried by the heterozygous parent segregate and combine wit...
• Which method of plant breeding is most suitable for improving a self-pollinated crop by combining desirable traits from two different pure-breeding parenta...
• In one of Mendel's classic experiments on pea plants, a cross between a plant with round seeds and one with wrinkled seeds produced an F1 generation with o...
• Which group of plant pathogens, being obligate parasites that can only survive and multiply on living host tissue, generally cannot be cultured on artifici...
• When Mendel self-pollinated F1 pea plants that were heterozygous for a single trait, the F2 generation showed both parental phenotypes reappearing in a rat...
• In a trihybrid cross involving three independently assorting gene pairs, each showing simple dominant-recessive inheritance, the expected number of distinc...
• Mendel's principle of dominance states that when two contrasting alleles for a trait are present together in a heterozygous individual, only one allele's t...
• In a monohybrid cross, when the F1 heterozygous offspring is crossed back to one of its own homozygous parents, whether the dominant or the recessive paren...
• A plant breeder crosses a pure-breeding tall pea plant with a pure-breeding dwarf pea plant and observes that all the F1 offspring are tall, with no interm...
• In a dihybrid cross between two heterozygous parents (AaBb x AaBb), assuming complete dominance and independent assortment as per Mendel's principles, what...
• A plant breeder performs a test cross by crossing an F1 plant, heterozygous for two independently assorting genes (AaBb), with a plant homozygous recessive...
• During which stage of meiosis does crossing over (exchange of genetic material between non-sister chromatids of homologous chromosomes) typically occur, co...
• In a dihybrid cross between two heterozygous pea plants (RrYy × RrYy), where R (round seed) is dominant over r (wrinkled) and Y (yellow) is dominant over ...
• Which type of cell division results in two daughter cells that are genetically identical to the parent cell and to each other, each containing the same num...
• In a dihybrid cross between two heterozygous parents (AaBb x AaBb), assuming complete dominance for both traits and independent assortment as per Mendel's ...
• Which genetic phenomenon, exploited commercially in the production of hybrid seed for crops such as maize, bajra and sunflower, refers to the superior perf...
• Which genetic condition in plants, in which a plant fails to produce viable, functional pollen while its female reproductive parts remain normal, is delibe...
• Which plant breeding method is most appropriate for improving an already high-yielding, popular self-pollinated variety by introducing just one or two spec...
• Which plant breeding method involves repeatedly crossing a hybrid offspring back to one of its original parents over several generations, mainly to transfe...
• In genetics, a cross between an individual displaying a dominant phenotype (of unknown genotype) and a homozygous recessive individual, conducted specifica...
• During which stage of meiosis does crossing over (exchange of genetic material between non-sister chromatids of homologous chromosomes) typically occur, co...
• In a dihybrid cross between two heterozygous pea plants (RrYy × RrYy), where R (round seed) is dominant over r (wrinkled) and Y (yellow) is dominant over ...
• While working with the bread mould fungus Neurospora crassa, two scientists formulated a hypothesis in 1941 proposing that each individual gene is responsi...
• Within a plant cell, protein synthesis chiefly takes place at the: