#Question id: 5728
#Unit 8. Inheritance Biology
A phenotypically normal man carries a translocated chromosome that contains the entire long arm of chromosome 14, part of the short arm of chromosome 14, and most of the long arm of chromosome 21. The man also carries a normal chromosome 14 and a normal chromosome 21. If he marries a cytologically (and phenotypically) normal woman, there is many chance that the couple will produce phenotypically abnormal children? Which of the following is correct combination?
#Question id: 5727
#Unit 8. Inheritance Biology
Pairing occurs during the prophase of meiosis I, after the chromosomes have been duplicated. Centromere mention as 1, 2, 3 and 4
Which of the following is correct statement Types of disjunction in a translocation heterozygote during meiosis I.
A) Centromeres 1 and 3 go to one pole and centromeres 2 and 4 go to the other pole, producing non fuctional gametes.
B) Centromeres 1 and 2 go to one pole and centromeres 3 and 4 go to the other pole, producing viable gametes.
C) Centromeres 2 and 3 go to one pole and centromeres 1 and 4 go to the other pole, producing euploid gametes.
D) Centromeres 2 and 3 go to one pole and centromeres 1 and 4 go to the other pole, producing non viable gamete
#Question id: 5725
#Unit 8. Inheritance Biology
An individual is having an inversion in heterozygous condition. The regions on normal chromosome are marked as A, B, C, D, E, F, G while the chromosome having inversion has the regions as a, b, e, d, c, f, g. The diagram given below shows pairing of these two homologous chromosomes during meiosis and the site of a crossing over is indicated:
The following statements are given to describe the inversion and the consequence of crossing over shown in the above diagram:
A. This is a paracentric inversion
B. This will generate a dicentric and an acentric chromosome following separation of chromosomes after crossing over
C. This will generate two recombinant chromosomes with deletion and other parental chrmosome following separation of chromosomes after crossing over
D. 50 % gametes will be non viable due to deletion or duplication of chromatids
E. The gametes having recombinant chromatid or parental inversion chromatids will be non-viable
#Question id: 5724
#Unit 8. Inheritance Biology
Species I is diploid (2n = 8) with chromosomes
AABBCCDD; related species II is diploid (2n = 8) with chromosomes MMNNOOPP. Individuals with the following sets of chromosomes represent what types of chromosome mutations?
A- AAABBCCDD B- AABBCCDDMNOP
C- AAABBCCDDD
#Question id: 5722
#Unit 8. Inheritance Biology
Meiotic products resulting from a single crossover within a pericentric inversion loop
A. This will generate a dicentric and an acentric chromosome following separation of chromosomes after crossing over
B. the inversion will completely suppress crossing over
C. All parental gametes that carry inversion chromosome are nonviable
D. All gametes from crossover products are non viable due to appearance of duplication of one arm and deletion of another arm
Which of the above statements are correct?
#Question id: 5721
#Unit 8. Inheritance Biology
There is paracentric inversion heterozygote ABCDEFG/ABFEDCG involved in double recombination during meiosis I within inverted region result in
A. dicentric and an acentric chromosome in meiosis I as the chiasmata get terminated.
B. appearance of deletion in both the cross over product
C. all gamete are viable
D. nonviable gametes from crossover products.
Which of the above statements are correct?