CBSE
Multiple Choice QuestionsWhich one of the following cannot be explained on the basis of Mendel's Law of Dominance?
the discrete unit controlling a particular character is called a factor
Out of one pair of factors, one is dominant and the other recessive
Alleles do not show any blending and both the characters recover as such in F2 generation
Alleles do not show any blending and both the characters recover as such in F2 generation
Which one of the following conditions correctly describes the manner of determining the sex in the given samples?
XO type of sex chromosomes determine male sex in grasshopper
XO condition in humans as found in Turner syndrome determines female sex
Homozygous sex chromosomes (XX) produce male in Drosophila
Homozygous sex chromosomes (XX) produce male in Drosophila
A person with unknown blood group under ABO system has suffered much blood loss in an accident and needs an immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers for blood donation without delay. What would have been the type of blood group of the donor friend?
Type AB
Type O
Type A
Type A
The genotype of plant showing the dominant phenotype can be determined by
test cross
dihybrid cross
pedigree analysis
pedigree analysis
Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?
Two X - chromosomes
Only one Y- chromosomes
Only one X - chromosome
Only one X - chromosome
Test cross in plants of in Drosophila involves crossing
Between two genotypes with recessive trait
Between two F1 hybrids
the F1 hybrid with a double recessive genotype
the F1 hybrid with a double recessive genotype
Sweet potato is homologous to
potato
colocasia
ginger
ginger
peptide synthesis inside a cell takes place in
mitochondria
chromoplast
ribosomes
ribosomes
Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?
Yeast - statins
Acetobacter aceti - acid
Clostridium Butulicum - lactic acid
Clostridium Butulicum - lactic acid
Mutations can be induced with
IAA
ethylene
gamma radiations
gamma radiations
