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प्रश्न
Give an example of an autosomal recessive trait in humans. Explain its pattern of inheritance with the help of a cross.
उत्तर
Sickle cell anaemia is an example of autosomal recessive trait in humans. The genes responsible for this disease are located on autosomes. This disease is only expressed if both the copies are defective. People with a single defective copy of the gene are clinically normal; however, they can pass on this defective gene to their subsequent generations.
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संबंधित प्रश्न
State any two symptoms of Down’s syndrome.
Give the importance of heterocyst in cyanobateria.
Identify the INCORRECT statement.
Identify the option that correctly represents the number of chromosomes in Down syndrome.
Sickel-cell anaemia is an example of ______.
It is well known that Queen Victoria of England was a carrier for haemophilia. Since this is an X-linked disease, it can be predicted that ______.
Females with Turner’s syndrome have ______.
Read the following and answer from given below:
Turner's syndrome is an example of monosomy. It is formed by the union of an allosome-free egg and a normal 'X' containing sperm or a normal egg and an allosome-free sperm. The individual has 2n = 45 chromosomes (44 + X0) instead of 46. Such individuals are sterile females who have rudimentary ovaries, underdeveloped breasts, small uterus, short stature, webbed neck, and abnormal intelligence. They may not menstruate or ovulate. This disorder can be treated by giving female sex hormones to women from the age of puberty to make them develop breasts and have menstruation. This makes them feel more normal.
Turner's syndrome is a/an ______
Give definition of non-disjunction.
Give the genotype of Klinefelter's syndrome.
