Who introduced the term “gene” to replace several contending and misleading terms for the basic unit of heredity in 1909?
a) Wilhelm Johansson
b) Hugo de Vries
c) Gregor John Mendel
d) Francis Galton
Who used the term “genetics” for the first time to represent the new field that studied heredity, variation and evolution?
a) Wilhelm Johansson
b) Hugo de Vries
c) William Bateson
d) Francis Galton
Explanation: he coined this term earlier in 1906 before the term of gene in 1909
It is believed that the modern concept of gene was given by the ……..while his experimentation on pea plant?
a) Wilhelm Johansson
b) Hugo de Vries
c) Gregor John Mendel
d) Francis Galton
Explanation: according to him “each trait in the pea plant is controlled by the discrete units”.
Mendel used the term/s………for the discrete units of heredity during his work on pea plant?
a) elementen
b) factors
c) gemmules
d) both a and b
Explanation: in modern terminology Mendel’s factors are called genes.
A gene is composed of ……..sequence of a short segment of ……..which encodes the the sequence of amino acid of a particular polypeptide.
a) nucleotide----RNA
b) amino acids----protein
c) nucleotide---DNA
d) nucleoside-----RNA/DNA
Where do the genes reside?
a) in mitochondria
b) in chromosomes
c) in cytoplasm
d) in nucleolus
