Advertisements
Advertisements
प्रश्न
What is the reason for the 21st trisomy?
Advertisements
उत्तर
21st Trisomy occurs due to non-disjunction or failure of separation of chromosomes (autosomes) during gamete formation.
APPEARS IN
संबंधित प्रश्न
What will be the phenotype of progeny, if a carrier haemophilic female marries a normal male?
State any two symptoms of Down’s syndrome.
Sickel-cell anaemia is an example of ______.
Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called as ______.
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 |
Why is the frequency of red-green colour blindness is many times higher in males than that in females?
What are chromosomal disorders?
How many pairs of autosomes are present in the human karyotype?
Which of the following is the primary cause of Mendelian disorders?
Which of the following is an example of a Mendelian disorder?
