Concern 46. a) Selfing away from monosomic herbs establish nullisomics. b) In the a real diploid the monoploid and you may haploid chromosome number is exact same. c) An automible triploids can be produced artificially from the crossing anywhere between haploid and you can a great diploid. d) A rise in the number of chromosome sets might have been an important aspect about provider of brand new bush kinds.
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 (iv) D d) (i) D (ii) C (iii) A beneficial (iv) B Respond to d) (i) D (ii) C (iii) Good (iv) B
Concern forty-eight. Whenever red eyed female Drosophila was crossed having light eyed male, the brand new FI offsprings might be a beneficial) Women is with white eye and you can guys is which have red-eye. b) Men is actually with red-eye and female try which have yellow eye. c) Both men and women is with red-eye d) Both men and women is actually which have white eye. Answer: c) Both males and females is with red-eye
Matter forty-two. a) All the bacteria and this has actually several basic categories of chromosomes based on several more specie’s. b) He’s five or half dozen duplicates of its very own genome – triggered from the doubling of diploid variety. c) They are developed by inter-certain crosses and virility is actually restored because of the chromosome increasing which have colchicine medication. d) He or she is formed between closely associated species just.. Answer: b) He has five or half dozen copies of their individual genome – caused from the increasing of diploid types.
Question 50. a) Thev can be produced forcibly bv crossing anywhere between autotetraploid diploid. b) He is highly fruitful on account of large number of gametes. c) Developed triploid apples was seedless having larger fruits than just diploid. d) Well-known doob mix are an organic autotriploid. Answer: b) He is very fruitful because of large number of gametes.
Matter 51. a) It occur in germinal tissue throughout gametogenesis. b) Result throughout the Pachytene condition away from prophase We out-of meiosis.. c) It’s myself proportional to your regularity of recombination between them. d) It’s common thickness has actually higher advantages. Answer: c) It’s in person proportional on frequency from recombination among them.
Matter 55. a) Deletions exists due to chemical compounds, medication rays. b) On such basis as place out-of damage with the chromosome it’s put into Critical removal inter calary removal c) Larger deletions features evolutionary relevance. d) Deletions is registered in the Drosophila Maize Respond to: c) Huge deletions have evolutionary benefits.
Concern 56. How do we contrary the new sterility regarding FI hybrid? a) Hereditary Technology b) Protoplasmic mixing c) Caused Mutation d) Created chromosomal aberration Respond to: d) Triggered chromosomal aberration
Matter 57. If the haploid count for the a mobile was 23. The fresh new double monosomic and pentasomy number might possibly be good) 44 and you can forty-two b) 17 and 34 c) 47 and you may 46 d) 45 and you can forty eight Address: a) forty two and you may forty-two
Answer: b) (A) is right, (R) is the correct factor (A)
Genes found close with her for a passing fancy chromosome and you will passed on along with her illustrated given that a great) connected genes b) unlinked gene c) syntenic genetics d) trans family genes Respond to: a) connected genes
Question 59. Assertion (A): Arabidopsis bush chromosomes have significantly more repeats away from TTT nucleotide sequences for the the telomeres. Need (R) : Restrict endonuclease chemical is utilized in the development off nucleotide sequence (Telomeres) mui a beneficial) (A) was completely wrong, (R) is right b) (A) is right, (R) is the right need (A) c) (A) is right, (R) is the completely wrong need (A) d) (A) and you may (R) was wrong.