Advertisements
Advertisements
प्रश्न
Which of the following traits is never observed in a human female?
विकल्प
Hypertrichosis
Haemophilia
Colour blindness
Myopia
उत्तर
Hypertrichosis
APPEARS IN
संबंधित प्रश्न
Give the genotype of Turner’s syndrome.
Give an example of an autosomal recessive trait in humans. Explain its pattern of inheritance with the help of a cross.
Why is pedigree analysis done in the study of human genetics? State the conclusions that can be drawn from it.
Attempt any TWO of the following:
‘The gene for sickle cell anaemia in homozygous condition is lethal and produces sickle cell trait in heterozygous carrier’. Explain.
In human beings 45 chromosomes/single X/XO abnormality causes ______.
Identify the genetic disorder m which an individual has an overall masculine development, gynaecomastia and is sterile.
Identify the option that correctly represents the number of chromosomes in Down syndrome.
In sickle-cell anaemia, shape of RBCs under oxygen tension becomes ______.
Rajesh and Mahesh have defective haemoglobin due to genetic disorders. Rajesh has too few globin molecules while Mahesh has incorrectly functioning globin molecules. Identify the disorder they are suffering from.
| Rajesh | Mahesh | |
| A. | Sickle cell anaemia - an autosome linked recessive trait | Thalassemia - an autosome linked dominant trait |
| B. | Thalassemia - an autosome linked recessive blood disorder | Sickle cell anaemia - an autosome linked recessive trait |
| C. | Sickle cell anemia - an autosome linked recessive trait | Thalassemia - an autosome linked recessive blood disorder |
| D. | Thalassemia - an autosome linked recessive blood disorder | Sickle cell anaemia - an autosome linked dominant trait |
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 an example of ______
