In the plants, due to mutation in the mitochondrial genome causing cytoplasmic male sterility can be influenced by the nuclear gene (Rf),  which is dominant over the cytoplasmic mitochondrial genome. If a male sterile plant  is pollinated by the fertile male plant with homozygous (Rf)condition, the progeny obtained in F1 will have

TLS Online TPP Program

#Question id: 13148

#Unit 8. Inheritance Biology

During  a three point test cross is carried out. The parental cross was  AABBCC  X  aabbcc , the F1 progeny is AaBbCc. What will be the no. of given genotype in 100 progeny?

i) AaBbCc               ii) aaBbcc

TLS Online TPP Program

#Question id: 13147

#Unit 8. Inheritance Biology

A cross was made between pure Blue and long pollen length with white and short pollen length. The F1 were test crossed. The F2 progeny obtained was as follows:

The genetic distance (cM) between flower colour and pollen length is;

TLS Online TPP Program

#Question id: 13146

#Unit 8. Inheritance Biology

Two gene A and B  gene distance is 30 m.u. if the frequency of the given gametes is,

i) AaBb=0.70 ii) Aabb=0.30

What will be the correct prediction?

a) Genes a and b are linked in cis

b) A and B gene are independently assort

c) Gene a and b showing incomplete linkage

d)  Genes a and b are linked in trans

TLS Online TPP Program

#Question id: 13145

#Unit 8. Inheritance Biology

We can construct a genetic map by considering the recombination frequencies for each pair of genes. The recombination frequency between a and b is 50%, a and c is 50%, and b and c is 20%. What will be the correct prediction about this statements;

a)  Recombination frequency between genes a and b and gene a and c is expected with independent assortment

b) The genes a and b and gene a and c may either be on different chromosomes or be very far apart on the same chromosome;  so we will place them in different linkage groups

c) The gene b and c are linked

d) The gene b and c are unlinked

Which of the following is the correct sequence?

TLS Online TPP Program

#Question id: 13005

#Unit 8. Inheritance Biology

50 meiocytes with the genotype AaBb has 5% recombinational frequency in their gametes A and B, then how many meiocytes undergoes to the single crossing over ?

TLS Online TPP Program

#Question id: 13004

#Unit 8. Inheritance Biology

If the 120 meiocytes undergoes to the single crossing over then what will be the correct prediction about this ;