Question 46. a) Selfing away from monosomic plants write nullisomics. b) Into the a genuine diploid both the monoploid and you may haploid chromosome count are exact same. c) A vehicle triploids can be produced artificially because of the crossing between haploid and you may an effective diploid. d) A rise in how many chromosome establishes might have been a keen essential requirement from the source 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 beneficial (iv) D d) (i) D (ii) C (iii) A (iv) B Respond to d) (i) D (ii) C (iii) A (iv) B
Matter 58
Matter forty-eight. When red-eyed lady Drosophila try entered that have white eyed male, the brand new FI offsprings was a beneficial) People are with white-eye and you can men are which have red-eye. b) Guys are with red eye and you will people is actually that have purple eye. c) Both males and females try having red eye d) Both men and women was which have white-eye. Answer: c) Both men and women was that have red eye
Matter forty-two. a) Every organisms and this has actually two or more earliest sets of chromosomes produced by a couple of other specie’s. b) He has got five otherwise six copies of the individual genome – triggered from the increasing of one’s diploid types. c) They’re developed by inter-certain crosses and virility is actually restored from the chromosome increasing which have colchicine cures. d) They are molded anywhere between closely related variety just.. Answer: b) He has got five otherwise half dozen copies of their very own genome – created of the doubling of diploid variety.
Concern 50. a) Thev can be made forcibly bv crossing anywhere between autotetraploid diploid. b) He is highly fruitful because of multitude of gametes. c) Cultivated triploid bananas is actually seedless with large fruit than just diploid. d) Prominent doob cross are an organic autotriploid. Answer: b) He’s highly fertile because of great number of gametes.
Question 51. a) It take place in germinal tissues throughout the gametogenesis. b) Result while in the Pachytene county regarding prophase We away from meiosis.. c) It is personally proportional on the frequency off recombination between them. d) This has universal thickness enjoys great importance. Answer: c) It’s truly proportional towards the volume from recombination between the two.
Question 55. a) Deletions exists on account of toxins, medication rays. b) Based on area away from damage on chromosome it is put into Critical deletion inter calary removal c) Big deletions keeps evolutionary importance. d) Deletions is actually registered in the Drosophila Maize Answer: c) Huge deletions has evolutionary advantages.
Question 56. How can we reverse new infertility from FI hybrid? a) Genetic Engineering b) Protoplasmic mixing c) Triggered Mutation d) Caused chromosomal aberration Answer: d) Triggered chromosomal aberration
Matter 57. In the event that haploid amount when you look at the a mobile is 23. The new twice monosomic 
and you may pentasomy number might be a great) 44 and forty two b) 17 and you will 34 c) 47 and you may 46 d) forty-five and you may 48 Address: a) 49 and you can 44
Answer: b) (A) is right, (R) is the right cause (A)
Genes receive close along with her on a single chromosome and you can handed down along with her depicted because a good) linked family genes b) unlinked gene c) syntenic genes d) trans family genes Answer: a) connected genes
Concern 59. Assertion (A): Arabidopsis bush chromosomes convey more repeats away from TTT nucleotide sequences during the new telomeres. Cause (R) : Limitation endonuclease enzyme is employed from the development out-of nucleotide series (Telomeres) mui good) (A) is wrong, (R) is right b) (A) is right, (R) is the proper reason (A) c) (A) is right, (R) ‘s the wrong factor (A) d) (A) and you may (R) is actually completely wrong.
