English

“Genes contain the information that is required to express a particular trait.” Explain. - Biology

Advertisements
Advertisements

Question

“Genes contain the information that is required to express a particular trait.” Explain.

Short Note

Solution

The genes present in an organism show a particular trait by way of forming certain product. This is facilitated by the process of transcription and translation (according to central dogma of genetics)

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Principle of Inheritance and Variation - VERY SHORT ANSWER [Page 33]

APPEARS IN

NCERT Exemplar Biology [English] Class 12
Chapter 5 Principle of Inheritance and Variation
VERY SHORT ANSWER | Q 7. | Page 33

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

(a) Why are thalassemia and haemophilia categorized as Mendelian disorders? Write the symptoms of these diseases. Explain their pattern of inheritance in humans.

(b) Write the genotypes of the normal parents producing a haemophilic son.


Why are color-blindness and thalassaemia categorised as Mendelian disorders? Write the symptoms of these diseases seen in people suffering from them.


About 8% of the human male population suffers from colour blindness, whereas only about 0.4% of the human female population suffers from this disease. Write an explanation to show how it is possible.


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. 


Give the importance of heterocyst in cyanobateria.


Identify the characteristics that are observed in an individual suffering from Klinefelter syndrome.

i. Gynaecomastia, under developed testis and no spermatogenesis.

ii. Voice pitch is harsh.

iii. They are tall with long arms.


Following list indicates various genetic diseases. Identify the diseases that are not caused due to single gene defect.

Huntington's chorea, alkaptonuria, Sickle cell anaemia, Down syndrome, thalassemia, Taysachs disease, Turner syndrome, cystic fibrosis, haemophi Lia, Klinefelter syndrome, albinism


Conditions of a karyotype 2n ± 1 and 2n ± 2 are called ______.


In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?


Select the disease which is caused by recessive autosomal genes when present in homozygous conditions.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×