Both sickle cell anaemia and Huntington's chorea are
bacteria-related diseases
congenital disorders
pollutant-induced disorders
pollutant-induced disorders
B.
congenital disorders
Both sickle cell anaemia and Huntington's chorea are congenital genetic disorders. Sickle cell anaemia was first opened by James Herrick (1904). In this disease the patient's haemoglobin level reduced to half of the normal and the RBCs become sickle shaped. A single mutation in a gene can cause sickle cell anaemia.
Huntington's chorea is caused by autosomal mutation which is dominant. The gene is present on chromosome number 4.
Withdrawal of which of the following hormones is the immediate cause of menstruation?
Eastrogens
FSH
FSH-RH
FSH-RH
Triticale, the first man-made cereal crop, has been obtained by crossing wheat with
rye
pearl millet
sugarcane
sugarcane
In a cereal grain the single cotyledon of embryo is represented by
coleorhiza
scutellum
prophyll
prophyll
The arrangement of the nuclei in a normal embryo sac in the dicot plants is
2+4+2
3+2+3
2+3+3
2+3+3
An enzyme that can stimulate germination of barley seeds is
α-amylase
lipase
protease
protease
Sickle cell anaemia has not been eliminated from the African population because
it is controlled by recessive genes
it is not a fatal disease
it provides immunity against malaria
it provides immunity against malaria
In order to obtain virus-free plants through tissue culture the best method is
protoplast culture
embryo rescue
anther culture
anther culture
Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste water into natural surface water, is:
< 3.0 ppm
< 10 ppm
< 100 ppm
< 100 ppm
HIV that causes AIDS, first starts destroying
B-lymphocytes
leucocytes
thrombocytes
thrombocytes
