Mendelian recombinations are due to
linkage
mutations
dominant characters
independent assortment
The recessive character in Mendel's pea plant was
yellow pod
round seed
green pod
axial flower
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
In human beings 45 chromosomes/ single X/XO abnormality causes
Down's syndrome
Klinefelter's syndrome
Turner's syndrome
Edward's syndrome
How many pairs of contrasting characters in pea pod were chosen by Mendel?
2
3
4
7
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
'Any of a pair of characteristics may combine with either one of another pair' is the statement for
mutation
hybrid vigour
Mendel's first law
Mendel's second law
When dominant and recessive alleles express themselves together, they are called
dominance
co-dominance
amphidominance
Pseudodominance
The plants with sets of similar chromosomes are termed as
diploid
tetraploid
autopolyploids
allopolyploids
When biologists analyse the genetic crosses, they call the first generation
phenotype
P1-generation
F1-generation
F2-generation
