Description : Coupling and repulsion are the two states of – (1) linkage (2) chiasma (3) mutation (4) crossing over
Last Answer : (1) linkage Explanation: Genetic linkage is the tendency of genes that are located proximal to each other on a chromosome to be inherited together during meiosis. The figure below depicts the gamete composition for linked genes from coupling and repulsion crosses:
Description : Coupling and repulsion are the two states of : (1) linkage (2) chiasma (3) mutation (4) crossing over
Last Answer : linkage
Description : Bateson used the terms coupling and repulsion for linkage and crossing over. Name the correct parental of coupling type alongwith its cross over or repulsion. (a) Coupling AABB, aabb; Repulsion AABB, ... c) Coupling aaBB, aabb; Repulsion AABB, aabb (d) Coupling AABB, aabb; Repulsion AAbb, aaBB
Last Answer : (d) Coupling AABB, aabb; Repulsion AAbb, aaBB
Description : Down’s syndrome is due to (a) crossing over (b) linkage (c) sex-linked inheritance (d) non-disjunction of chromosomes.
Last Answer : (d) non-disjunction of chromosomes.
Description : Segregation of Mendelian factors (no linkage, no crossing over) occurs during (a) anaphase I (b) anaphase II (c) diplotene (d) metaphase I.
Last Answer : a) anaphase I
Description : Crossing over in diploid organism is responsible for (a) segregation of alleles (b) recombination of linked alleles (c) dominance of genes (d) linkage between genes.
Last Answer : b) recombination of linked alleles
Description : Lack of independent assortment of two genes A and B in fruit fly Drosophila is due to (a) repulsion (b) recombination (c) linkage (d) crossing over.
Last Answer : (c) linkage
Description : The movement of a gene from one linkage group to another is called (a) translocation (b) crossing over (c) inversion (d) duplication
Last Answer : (c) inversion
Description : The mechanism that causes a gene to move from one linkage group to another is called (a) inversion (b) duplication (c) translocation (d) crossing-over.
Last Answer : (c) translocation
Description : The type of gene interaction in which the effects of one gene override or mask the effects of other entirely different genes is called: a) linkage b) mutation c) pleitropy (pron: ply-ah-tropy) d) epistasis (pron: eh-pis-te-sis)
Last Answer : ANSWER: D -- EPISTASIS
Description : Which among the following does not belong to welfare schemes for the farmers? a) Kisan Credit Card Scheme b) SHG Bank Linkage Programme c) National Agricultural Insurance Scheme d) Employee Referral Scheme
Last Answer : d) Employee Referral Scheme
Description : In which type of cell divisions does crossing over of chromosomes takes place? -Do You Know?
Last Answer : answer:
Description : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange takes place in meiosis.
Last Answer : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange ... . If both Assertion & Reason are false.
Description : Crossing over takes place in :-
Last Answer : Crossing over takes place in :- A. Zygotene B. Pachytene C. Diplotene D. Diakinesis
Description : In which stage, crossing over takes place?
Last Answer : Ans. Pachytene stage
Description : Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below. Column I Column II A. Pachytene (i) Pairing of homologous chromosomes B. Metaphase I (ii) ... , C-(iii), D-(i) (d) A-(iv), B-(iii), C-(ii), D-(i)
Last Answer : (a) A-(iii), B-(iv), C-(ii), D-(i)
Description : Crossing over takes place between which chromatids and in which stage of the cell cycle ? (a) Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I. (b) Non- ... prophase I. (d) Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.
Last Answer : (b) Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
Description : In which type of cell divisions does crossing over of chromosomes takes place?
Last Answer : Meiosis
Description : A plant breeder: waists to develop a disease resistant variety. What should he do first?(a) Hybridisation (b) Mutation (c) Selection (d) Production of crop
Last Answer : (c) Selection
Description : The desired varieties of economically useful crops are raised by (a) vemalisation (b) mutation (c) natural selection (d) hybridisation
Last Answer : (d) hybridisation
Description : Hogo de Vries gave his mutation theory on organic evolution while working on `:`
Last Answer : Hogo de Vries gave his mutation theory on organic evolution while working on `:` A. ... Drosophila melanogaster C. Pisum stivum D. Althena rosea
Description : Mutation theory to explain mechanism of evolution was given by Hugo de Vries and he experimented on the :
Last Answer : Mutation theory to explain mechanism of evolution was given by Hugo de Vries and he experimented on ... Fruit fly C. China rose D. Evening primerose
Description : What is the significance of mutation and repair of mutations to evolution of sexual reproduction?
Last Answer : meow
Description : What is a mutation and how does it relate to evolution?
Last Answer : A mutation is any change in the DNA. Mutations provide the genetic variation that evolution by natural selection needs to select from.
Description : Which of the following(s) is/are found in Genetic Algorithms? (i) evolution (ii) selection (iii) reproduction (iv) mutation (a) i & ii only (b) i, ii & iii only (c) ii, iii & iv only
Last Answer : (a) i & ii only
Description : Coupling reaction takes place when benzene diazonium chloride is treated with :
Last Answer : Coupling reaction takes place when benzene diazonium chloride is treated with : A. Benzaldehyde B. `alpha`-naphthol C. N, N-dimethyl aniline D. Phenol
Description : What mutation can be passed to passed to offspring only if it takes place a cell?
Last Answer : Need answer
Description : Maximum photosynthesis takes place in— (A) Blue light (B) Red light (C) Violet light (D) Green light
Last Answer : (D) Green light
Description : Hatchling of ferlized eggs takes place at a 21 days, 35°c b 21 days,38°c c 23 days,35°c d 23 days,38°c
Last Answer : b 21 days,38°c
Description : A woman who lived in Germany during World War II wanted to cross the German/Swiss border in order to escape Nazi pursuers. The bridge which she is to cross is a half mile across, over a large canyon. ... , in which time the guard will see her crossing and shoot her. How does she get across? -Riddles
Last Answer : She waits until the guard is inside his hut, then walks halfway across before starting to walk back. The guard, seing she has no papers, sends her 'back'.
Description : The evolution of heat of solution takes place in ammonia absorption plant when (a) ammonia vapour goes into solution (b) ammonia vapour is driven out of solution (c) lithium bromide mixes with ammonia (d) weak solution mixes with strong solution
Last Answer : Ans: a
Description : Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of chromatid material between non sister chromati
Last Answer : Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of ... D. If both Assertion & Reason are false.
Description : A 250 m goods train takes 50 s to cross a person who is going in the same direction with the speed of 8 km/h. After crossing that person, the train can reach next station in 2 hr. How long that person takes to reach that station after being crossed by them? A) 2 ½ hr B) 5hr C) 3 1/2hr D) 1hr
Last Answer : ANSWER:A Explanation: Speed of the person = 8 kmph = (8*5/18)m/s = 20/9 m/s Then relative speed of train = (x-20/9)m/s As train takes 50 sec to cross the person Therefore 50 =250/(x-20/ ... 20,000 m = 20 km Thus time taken by the person to cover the distance of 20km= 20/8 hr=2 ½ hr
Description : In cranking the engine normally motor takes current about a) 300 amperes b) 400 amperesb) 5 0 0 amperes d) 600 amperes
Last Answer : b) 400 amperes
Description : In what process do plants produce food ?
Last Answer : : Plants produce food in the process of photosynthesis.
Description : Use of ______ is prohibited in process boilers. a. Use of a common gas b. combustion air control linkage c. jack shaft d. All of the above
Last Answer : d. All of the above
Description : A degree of control over the speed of a slip ring induction motor can be obtained by _____________. A. adjusting governor linkage B. changing the number of phases to the motor C. inserting resistance into the stator circuit D. inserting resistance into the rotor circuit
Last Answer : Answer: D
Description : The place where a railway line and a road cross each other at the same level, is known as A. Level Crossing B. Cross over C. Rail Junction D. Road Junction
Last Answer : A [Level Crossing] Explanation: A level crossing (also called a grade crossing, a railway crossing, or a railroad crossing) is a place where a railway line and a road meet each other on the same level.
Description : How is the process of crossing over and independent assortment alike?
Last Answer : Feel Free to Answer
Description : What is The process that takes place inside all eukaryotic cells (both plants and animals) that breaks down sugars to produce energy in the form of ATP?
Description : During photosynthesis, energy is absorbed by chlorophyll, therefore it is: (a) exothermic reaction (b) endothermic reaction (c) neither exothermic nor endothermic reaction (d) the process takes place in plants only
Last Answer : (b) endothermic reaction
Description : The new varieties of plants are produced by (a) introduction and mutation (b) selection and introduction (c) selection and hybridization (d) mutation and selection.
Last Answer : (c) selection and hybridization
Description : Coupling of intact herbicide molecules with sugars in living plants a). Metabolism b). reverse metabolism c). Conjugation d). None of these
Last Answer : c). Conjugation
Description : Find out the correct sentence. Hybridisation means crossing between genetically dissimilar plants Cross between two varieties is called as inter speci
Last Answer : Find out the correct sentence. Hybridisation means crossing between genetically dissimilar plants Cross between two ... (iii) D. (iii) and (iv)
Description : Crossing of plants through fusion of somatic cell
Last Answer : Ans. Somatic hybridization
Description : In maize, hybrid vigour is exploited by (a) inducing mutations (b) bombarding the protoplast with DNA (c) crossing of two inbred parental lines (d) harvesting seeds from the most productive plants.
Last Answer : (c) crossing of two inbred parental lines
Description : In maize, hybrid vigour is exploited by (a) crossing of two inbred parental lines (b) harvesting seeds from the most productive plants (c) inducing mutations (d) bombarding the seeds with DNA.
Last Answer : (a) crossing of two inbred parental lines
Description : Test cross in plants or in Drosophila involves crossing (a) between two genotypes with recessive trait (b) between two F1 hybrids (c) the F1 hybrid with a double recessive genotype (d) between two genotypes with dominant trait.
Last Answer : (c) the F1 hybrid with a double recessive genotype
Description : The process of copying genetic information from one strand of DNA in to RNA is termed as (a) translation (b) transcription (c) replication (d) mutation
Last Answer : Ans:(b)