Who is known as the 'father of genetics'?
Fischer
Mendel
Aristotle
Weismann
The externally observable characters of an individual are called
phenotype
genotype
homozygous
heterozygous
Mutations used in agriculture are commonly
induced
spontaneous
lethal
recessive and lethal
If a cross between two plants give 50% tall and 50% dwarf progeny, then the parents genotypes are
Tt x Tt
Tt x tt
TT x tt
TT x Tt
A monohybrid cross between two plants, one having 24cm long internodes and the other having 12cm long internodes, produced F1-hybrids all having 18 cm long internodes. This is a case of
recessive dominance
multiple allelism
complete dominance
incomplete dominance
In human beings 45 chromosomes/ single X/XO abnormality causes
Down's syndrome
Klinefelter's syndrome
Turner's syndrome
Edward's syndrome
Of a normal couple, half the sons are haemophilic while half the daughters are carriers. The gene is located on
X-chromosome of father
Y-chromosome of father
one X-chromosome of mother
both the X-chromosomes of mother
Mendelian recombinations are due to
linkage
mutations
dominant characters
independent assortment
A person with 47 chromosomes due to an additional Y-chromosome suffers from a condition called
Super female
The plants with sets of similar chromosomes are termed as
diploid
tetraploid
autopolyploids
allopolyploids
