#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: 5729
#Unit 8. Inheritance Biology
One chromosome in a plant has the sequence A B C D E F, and another has the sequence M N O P Q R. A reciprocal translocation between these chromosomes produced the following arrangement: A B C P Q R on one chromosome and M N O D E F on the other. If an individual is heterozygous for this translocation, the consequence in meiosis will be as follows:
A. The two normal chromosomes and-two translocated chromosomes pair separately
B. Half of gametes produced from this meiosis are non-viable as they have deletions and duplications
C. In one of the cross configurations called "horizontal segregation" all gametes having normal or translocated chromosomes will not survive
D. The gametes having normal chromosomes only survive while all gametes having translocated chromosomes are non-viable, hence the translocations are used as crossover suppressors
Which of the following combinations best describes the meiotic consequences for the translocation described above?
#Question id: 5730
#Unit 8. Inheritance Biology
In a family, father is homozygous dominant (AA) for a gene A and his wife is homozygous for its ressive allele (aa) showing albino phenotype. It was surprising that their child showed the albino phenotype. Which of the following phenomenon can explain the phenotype?
#Question id: 5731
#Unit 8. Inheritance Biology
If an individual is heterozygous for this translocation, the consequence in meiosis will be as follows:
A) Segregation results in a + c in one Gametes and b + d in another gametes, have duplication and deficiency so unable to produce viable offspring
B) Segregation results in a + b in one Gametes and c + d in another gametes, have normal chromosome so all viable offspring produced
C) Segregation results in a + d in one Gametes with normal chromosome and b + c in another gametes contains translocation arrangement, all viable offspring produced
D) Segregation results in a + d in one Gametes with normal chromosome, will produced viable offspring while b + c in another gametes contains translocation arrangement, will produce non viable offspring.
#Question id: 5732
#Unit 8. Inheritance Biology
Consider a plant, such as maize, heterozygous for a paracentric inversion. The inversion is very small and a synapsed inversion loop does not occur in any of the cells. Which of the following statement is correct?
#Question id: 5733
#Unit 8. Inheritance Biology
In individuals heterozygous for a chromosome inversion, the homologous chromosomes form a loop in prophase I of meiosis.
Which of the following is effect of inversion?
A. A dicentric and an acentric chromosome in meiosis I as the chiasmata gets terminated when inversion includes centromere
B. Appearance of deletion and duplication in both the cross over products chromosomes when centromere outside of inversion region
C. All recombinant gamete are non-viable gametes when single crossing over within inverted region; irrespective to paracentric or pericentic inversion
D. Nonviable gametes are usually produced, resulting in a depression in observed recombination frequencies.
Which of the above statements are correct?