Who studied the structure of molecules by firing X-rays?
Sir Alec Jeffrey
James Watson
Francis Crick
Roselin Franklin
Write the name of the plant Mendel choose as his experimental material.
Pea plant
Rose plant
Mango tree
May flower
DNA molecule is copied so that one copy can be distributed to each of which type of cell?
Two daughter cells
Gene cell
Two parent cells
Cells
In humans, there are two type of sex chromosomes, called X and Y chromosomes. A person with two X chromosomes is called:
Female
Male
Autosomes
All of these
How many chromosomes are there in human body?
23
45
46
36
A human body, as a single cell consists of 23 DNA molecules from its father. How many molecules come from its mother?
46 DNA molecules
26 DNA molecules
23 DNA molecules
20 DNA molecules
The process of producing many identical organisms or clones is called:
Chromosome
Oncogenes
Cloning
Clone
Write the name of the sheep which was the first successfully cloned at the end of the 20th century.
Promithya
Coppy cat
Dolly
Eve
Who discovered that the genes on a chromosome could change position?
Barbara McClintock
Rosalin Franklin
