Principles of Inheritance and Variation

Mendel's laws were rediscovered by
An allele is said to be dominant, if
The genotypic ratio of a monohybrid cross will be
Choose the correct answer from the alternatives given :
A DNA sequence undergoes three subsequent point mutations which result in subsequent changes in transcription of mRNA as shown below:
Original mRNA : AUG CAU CUC ACG GAU UAG
Point mutation 1: AUG CAU CUU ACG GUA UAG
Point mutation 2 : AUG CAU GCU UAC - GGU AUA
Point mutation 3 : AUG CAU GCU UAA GGU AUA
Select the correct sequence of point mutations that occurred in the DNA.
In Mirabilis jalapa when two $$F_1$$ pink flowered plants were crossed with each other, the $$F_2$$ generation produced 40 red, 80 pink and 40 white flowering plants. This is a case of