If a boy's father has haemophilia and his mother has one gene for haemophilia, what is the chance that the boy will inherit the disease?
Haemophilia is a X-linked recessive disorder. The presence of single X-chromosome (with haemophilia gene) show the disease in male. Therefore, in the above example, boy chances of inheriting the disease is 50%.
Pureline breed refers to
homozygosity with only dominant genes
heterozygosity and linkage
Pure line breed refers to a group of identical individuals that always produce offspring of the same phenotype when intercrossed. This occurs only when they are homozygous.
The movements of neutrophils to the site of inflammation is due to
release of hormone
activity of antigens
activations of antigens
Chemotaxis is the movement of an organism in response to a chemical stimulus. Neutrophils movement to the site of inflammation is due to chemotaxis.
What type of sorus is present in Nephrolepsis?
None of these
Sporangia arise without any order of development, therefore, called mixed type, e.g., Nephrolepis.
Male mosquito is not sanguivore as
it lacks cutting and biting mandibles
it does not require any kind of proteins
it lacks smelling power
All of the above
it lacks smelling power
Sanguivorous feed on blood and thus have sucking type of mouth parts male mosquito has not such parts.
Elephantiasis is caused by
Elephantiasis is caused by Wuchereria bancrofti. It is called so due to enormous swelling of affected part.
Which one of the following codons codes for the some information as UGC?
Wobble Hypothesis helps to understand why multiple codons can code for a single amino acid. UGC and UGU suggest wobble hypothesis and both stand for same amino acid cystin.
Rarely observed phenotype in population is called
All of these
Wild type refers to a strain, organism or gene, that is predominant in the wild population, while mutant form is observed rarely.
On the basis of utility, Nagpuri buffaloes are categorized as
Nagpuri buffoles are categorized as milkers. They also include Murrah, Jafferabadi, Nili, Ravi and Surti.
Which of the following plant is efficient converter of solar energy whose net productivity is 2-4 kg/m2/yr or even higher?
Sugarcane is the plant which is a converter of solar energy whose net productivity is 2-4 kg/m2/yr . This is because it is a photosynthetic C4 plant and it does not perform photrespiration.