Matter 46. a) Selfing off monosomic vegetation develop nullisomics. b) Into the a genuine diploid both the monoploid and you may haploid chromosome number try same. c) A car triploids can be made forcibly by the crossing anywhere between haploid and you will good diploid. d) An increase in what number of chromosome establishes might have been a keen important factor about provider of brand 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) https://datingranking.net/escort-directory/coral-springs/ B (iii) An effective (iv) D d) (i) D (ii) C (iii) Good (iv) B Address d) (i) D (ii) C (iii) A great (iv) B
Question 48. Whenever red-eyed ladies Drosophila is actually crossed with white eyed male, the fresh FI offsprings is a beneficial) Women was with white-eye and you can males is that have red eye. b) Guys are having red eye and you may females are that have reddish attention. c) Both men and women is having red eye d) Both males and females is having white-eye.
Question forty-two. a) Every organisms and this have 2 or more earliest sets of chromosomes based on a couple of different specie’s. b) He’s four or half dozen copies of its individual genome – triggered of the increasing of your diploid varieties. c) They’re produced by inter-certain crosses and fertility try recovered of the chromosome doubling which have colchicine cures. d) He’s formed anywhere between closely related varieties only.. Answer: b) He has got five or six copies of the very own genome – triggered of the doubling of one’s diploid variety.
Question fifty. a) Thev can be produced artificially bv crossing anywhere between autotetraploid diploid. b) He or she is extremely rich due to plethora of gametes. c) Grown triploid apples are seedless having larger fruits than just diploid. d) Popular doob cross try a natural autotriploid. Answer: b) They are highly rich because of great number of gametes.
Matter 51. a) It take place in germinal tissue while in the gametogenesis. b) Result through the Pachytene state from prophase I off meiosis.. c) It is yourself proportional into the volume away from recombination among them. d) This has universal occurrence has actually high advantages. Answer: c) It’s physically proportional toward volume out-of recombination between them.
Answer: c) Both males and females is actually that have red-eye
Matter 55. a) Deletions exists due to chemical substances, drugs light. b) Based on place away from damage towards chromosome it is split up into Terminal removal inter calary removal c) Big deletions have evolutionary value. d) Deletions are filed for the Drosophila Maize Respond to: c) Large deletions features evolutionary significance.
Matter 56. How do we reverse the brand new infertility out of FI crossbreed? a) Genetic Technologies b) Protoplasmic blend c) Caused Mutation d) Triggered chromosomal aberration Answer: d) Caused chromosomal aberration
Matter 59
Concern 57. When the haploid matter inside a mobile try 23. The fresh new twice monosomic and you can pentasomy amount might be a good) 49 and you will 49 b) 17 and you will 34 c) 47 and 46 d) 45 and forty-eight Respond to: a) 44 and you can 44
Concern 58. Genetics located intimate together with her on a single chromosome and you can passed down together illustrated just like the a beneficial) connected genes b) unlinked gene c) syntenic family genes d) trans family genes Respond to: a) connected genetics
Denial (A): Arabidopsis bush chromosomes do have more repeats from TTT nucleotide sequences from inside the new telomeres. Reason (R) : Restrict endonuclease enzyme can be used about formation off nucleotide sequence (Telomeres) mui a good) (A) was wrong, (R) is right b) (A) is right, (R) is the best reasons (A) c) (A) is correct, (R) ‘s the incorrect factor (A) d) (A) and you will (R) try completely wrong. Answer: b) (A) is right, (R) is the right factor (A)
