F2-generation is produced by
selfing the parents
recessive cross between individual parents
crossing F1-progeny with one of the parents
selfing the progeny of two individual parents
The recessive characters are expressed
on any autosome
on both the chromosomes of female
when they are present on X-chromosomes of male
when they are present on X-chromosomes of female
A cross between plants having YYRR and yyrr composition will yield plant with
round and yellow seeds
round and green seeds
wrinkled and yellow seeds
wrinkled and green seeds
If hybrid red flowered plants of pea are crossed back to pure red flowered parent plant, the progeny will show
all red flowered plants
all white flowered plants
3 red and 1 white flowered plants
50% red and 50% white flowered plants
The recessive character in Mendel's pea plant was
yellow pod
round seed
green pod
axial flower
The mutations are mainly responsible for
constancy in organisms
variation in organisms
increasing the population rate
maintaining genetic continuity
The plants with sets of similar chromosomes are termed as
diploid
tetraploid
autopolyploids
allopolyploids
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
The first law given by Mendel, was
law of inheritance
law of dominance
law of segregation
law of independent assortment
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
