Matter 46. a) Selfing regarding monosomic plant life produce nullisomics. b) Inside a genuine diploid both monoploid and you may haploid chromosome number was exact same. c) A car triploids can be produced artificially by the crossing between haploid and you will a beneficial diploid. d) An increase in exactly how many chromosome kits has been a keen important aspect from the resource of new plant varieties.
a) (i) C (ii) D (iii) B (iv) A b) (i) B (ii) C (iii) D (iv) A c) (i) C (ii) B (iii) A good (iv) D d) (i) D (ii) C (iii) A good (iv) B Address d) (i) D (ii) C (iii) A (iv) B
Question 48. Whenever red-eyed ladies Drosophila are entered having white eyed men, brand new FI offsprings would-be a beneficial) Ladies try that have white-eye and men is having red eye. b) Boys are with red-eye and you may females try with yellow vision. c) Both men and women are which have red-eye d) Both males and females is actually with white-eye. Answer: c) Both males and females is having red eye
Matter 49. a) Most of the bacteria and this provides a couple of very first categories of chromosomes based on a couple of other specie’s. b) He has got five or six copies of its very own genome – induced of the doubling of the diploid species. c) They truly are created by inter-specific crosses and you will fertility is restored by chromosome doubling which have colchicine cures. d) He’s designed between directly related species simply.. Answer: b) They have five or half a dozen duplicates of the very own genome – triggered by increasing of diploid species.
Concern 50. a) Thev can be produced artificially bv crossing anywhere between autotetraploid diploid. b) He could be highly fruitful on account of plethora of gametes. c) Expanded triploid apples was seedless which have large good fresh fruit than diploid. d) Preferred doob get across was a natural autotriploid. Answer: b) He is extremely fertile because of plethora of gametes.
Concern 51. a) It occur in germinal structure throughout the gametogenesis. b) Happen throughout Pachytene state out-of prophase I of meiosis.. c) It’s actually proportional into the frequency regarding recombination among them. d) This has common thickness features high significance. https://datingranking.net/fr/brancher/ Answer: c) It’s privately proportional for the regularity out-of recombination among them.
Concern 55. a) Deletions exist due to toxins, medications radiation. b) On such basis as location from damage for the chromosome it’s divided into Critical deletion inter calary deletion c) Large deletions provides evolutionary importance. d) Deletions are registered into the Drosophila Maize Address: c) Large deletions enjoys evolutionary relevance.
Concern 56. How can we contrary the latest infertility out-of FI crossbreed? a) Genetic Engineering b) Protoplasmic mix c) Created Mutation d) Induced chromosomal aberration Answer: d) Caused chromosomal aberration
Concern 57. If haploid count within the a cell is 23. This new double monosomic and you will pentasomy amount would be a beneficial) 49 and you can forty-two b) 17 and you may 34 c) 47 and you will 46 d) forty five and you can 48 Respond to: a) 44 and you can 44
Answer: b) (A) is correct, (R) ‘s the correct explanation (A)
Family genes discovered close along with her for a passing fancy chromosome and you may passed on with her represented due to the fact an effective) linked family genes b) unlinked gene c) syntenic family genes d) trans family genes Answer: a) connected genes
Concern 59. Assertion (A): Arabidopsis plant chromosomes do have more repeats out-of TTT nucleotide sequences when you look at the the latest telomeres. Need (R) : Restriction endonuclease chemical is utilized regarding development away from nucleotide series (Telomeres) mui a) (A) are incorrect, (R) is right b) (A) is right, (R) ‘s the proper reasons (A) c) (A) is correct, (R) ‘s the completely wrong explanation (A) d) (A) and you may (R) was completely wrong.