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.
XO type of sex chromosomes determine male sex in grasshopper
Grasshopper is an example of XO type of sex determination in which the males have only one X - chromosome besides the autosomes, whereas females have a pair of X - chromosomes.
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
peptide synthesis inside a cell takes place in
mitochondria
chromoplast
ribosomes
ribosomes
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
Mutations can be induced with
IAA
ethylene
gamma radiations
gamma radiations
