In a muscle, the functional unit of contraction is the …….. Portion
In a muscle, the functional unit of contraction is the …….. Portion of myofibril between two successive ‘Z’ lines.
Options
(a) I band (b) A band (c) H zone (d) I band with […]
Biology
A dihybrid test cross yielding a result of 1 : 1 : 1 : 1 ratio is indicative of
A dihybrid test cross yielding a result of 1 : 1 : 1 : 1 ratio is indicative of
Options
(a) 4 different types of gametes produced by the F₁ dihybrid (b) homozygous […]
A person whose blood group is A, its genotype can be written as
A person whose blood group is A, its genotype can be written as
Options
(a) IᴬIᴮ, IᴬIᴮ (b) IᴬIᴮ, IᴼIᴼ (c) IᴬIᴬ, IᴬIᴼ (d) IᴬIᴼ,IᴮIᴼ
Correct Answer:
IᴬIᴬ, IᴬIᴼ
Explanation:
No explanation available. […]
Chromosome theory states that
Chromosome theory states that
Options
(a) genes are located on chromosome (b) chromosome is made up of DNA (c) chromosome is made up of RNA (d) all of the above
Correct Answer:
genes […]
Diameter of DNA helix is
Diameter of DNA helix is
Options
(a) 10 Å (b) 20 Å (c) 30 Å (d) 40 Å
Correct Answer:
20 Å
Explanation:
No explanation available. Be the first to write the explanation […]
According to one of the most widely accepted theory, earth’s atmosphere before
According to one of the most widely accepted theory, earth’s atmosphere before origin of life consisted of a mixture of
Options
(a) O₃, CH₄, O₂ and H₂O (b) O₂, NH₃, CH₄ and H₂O […]
Closely related species living in the same area/habitat are called as
Closely related species living in the same area/habitat are called as
Options
(a) allopatric (b) sympatric (c) allochoronic (d) siblings
Correct Answer:
sympatric
Explanation:
No explanation available. Be the first to write the […]
Every cell of the body contributes gemmules to the germ cells and so shares in the
Every cell of the body contributes gemmules to the germ cells and so shares in the transmission of inherited characters. This theory is known as
Options
(a) theory of inheritance of acquired characteristics […]
Giraffe has long neck, this can be attributed to
Giraffe has long neck, this can be attributed to
Options
(a) natural selection (b) inheritance of acquired character (c) isolation (d) none of these
Correct Answer:
inheritance of acquired character
Explanation:
No explanation […]
Addison’s disease results from
Addison’s disease results from
Options
(a) hypertrophy of gonad (b) hyperactivity of Leydig’s cells (c) hypo-secretion of adrenal cortex (d) none of the above
Correct Answer:
hypo-secretion of adrenal cortex
Explanation:
No explanation […]