List of top Biology Questions on Mendelian Disorders

Select the mendelian disorders from the following:
Thalassemia
Turner's Syndrome
Cystic Fibrosis
Sickle cell anemia
Choose the correct answer from the options given below.

In F2 generation, the phenotype ratio of dihybrid cross_____

Number of pairs of contrasting characters in pea plants selection by Mendel

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement :

A man whose father is a colourblind, marry a woman, who is a daughter of colourblind mother. The offspring of this couple will be

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character

Study the pedigree chart given below. What does it show?

The karyotype of the Klinefelter's syndrome patient is

Downs syndrome is caused by an extra copy of chromosome number $21$. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?

Gynaecomastia is the symptom of .............

Among the following monosomic aneuploid is:

The exception of Mendels law of segregation is:

The number of Barr bodies in a human suffering from Turners syndrome, is:

The gene for haemophilia is known to be located on:

During puberty, how many primary follicles are typically present in the ovaries of a female ?

Which of the following is a characteristic symptom of Down syndrome?

Red green colourblindness is a sex linked trait. Which of the given statements is not correct regarding colourblindness ?

Study the given pedigree chart for sickle-cell anaemia and select the most appropriate option for the genotypes.

Refer to the given table of contrasting traits in pea plants studied by Mendel. Which of the given traits is correctly placed ?