TN State Board Samacheer Kalvi Online Test for 12th Std - Biology - English - Principles of Inheritance and Variation

Question 1 Of 10

Unit of heredity is ……………….

allele allelomorph trait gene

Question 2 Of 10

Pick out the correct statement.

i, iii, iv are correct i and iv are correct i and iv are correct

Question 3 Of 10

Identify the incorrect statement regarding haplodiploidy.

Unfertilized eggs develop into drones Fertilized eggs develop into queen and worker bees Males have half the total chromosomal number Haplodiploidy is noticed in honeybees and drosophila

Question 4 Of 10

A marriage between a colourblind man and a normal woman produces

All carrier daughters and normal sons 50% carrier daughters, 50% normal daughters 50% colourblind sons, 50% normal sons All carrier offsprings

Question 5 Of 10

Mangolism is a genetic disorder which is caused by the presence of an extra chromosome number.

20 21 4 23

Question 6 Of 10

Father of a child is colourblind and mother is carrier for colourblindness, the probability of the child being colourblind is ………………

25% 50% 100% 75%

Question 7 Of 10

Pick the odd one out regarding Mendelian disorder.

Thalassemia phenylketonuria Albinism Huntington’s chorea

Question 8 Of 10

Who is the founder of Modem Eugenics movement?

Mendel Darwin Fransis Galton Karl pearson

Question 9 Of 10

Haemophilia is more common in human males than human females. The reason is due to

X-linked recessive gene Y-linked recessive gene Allosomal abnormality X-linked recessive gene

Question 10 Of 10

Assertion (A): On diagnosis, Ramu is reported to have underdeveloped testis and gynecomastia.

R explains A Both A and R are wrong Both and R are right but R is not the correct explanation of A R explains A

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Biology - English Medium - Principles of Inheritance and Variation

Samacheer Kalvi 12th Biology - Principles of Inheritance and Variation - Book Back Questions in English Medium