The number of amino acids and number of peptide bonds in a linear tetrapeptide (made of different amino acids,) are respectively:

A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is:

Alpha-helix is found in:

Dialysis can be used to separate:

Which of the following is a simplest amino acid?

Which of the following element is present in haemoglobin?

Which one of the following statements is correct?

Q1. Which of the following statements is correct?
(1) Evolutionary Biology studies aged rocks
(2) Stellar distances in light years (3) Origin of life is a unique event (4) Galaxies have planets & satellites

Q2. The Big Bang theory attempts to explain the origin of —

Q3. Who proved that life comes only from pre-existing life?

Q4. According to Darwin, fitness refers to —

Q5. H.M.S. Beagle is —

How many wrinkled green seeds were produced in the F2 generation of Mendel’s dihybrid cross?

In Mendel’s dihybrid cross, maximum number of phenotype in F2 generation was —

Physical appearance of characters is called —

Given below are two statements:
Statement I: A cross of a pea plant with yellow and round seeds and one with green and wrinkled seeds is a monohybrid cross.
Statement II: The phenotypic ratio of a dihybrid cross is 9:3:3:1

Assertion (A): In Mendel’s study of inheritance of two genes, green colour was dominant over yellow and wrinkled shape dominant over round.
Reason (R): rrYy denotes wrinkled yellow phenotype.