TN State Board Samacheer Kalvi Online Test for 11th Std - Biology - English - Principles of Inheritance and Variation

Question 1 Of 10

Which of the following is not correct?

Three or more alleles of a trait in the population are called multiple alleles. A normal gene undergoes mutations to form many alleles Multiple alleles map at different loci of a chromosome A diploid organism has only two alleles out of many in the population

Question 2 Of 10

XO type of sex determination and XY type of sex determination are examples of …………………

Male heterogamety Female heterogamety Male homogamety Both (b) and (c)

Question 3 Of 10

Pick the odd one out regarding Mendelian disorder.

Thalassemia phenylketonuria Albinism Huntington’s chorea

Question 4 Of 10

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

20 21 4 23

Question 5 Of 10

“Universal Donor” and “Universal Recipients” blood group are ……………… and ……………… respectively.

AB, O O, AB A, B B, A

Question 6 Of 10

The ……………… deals with the control of several inherited human diseases especially inborn errors of metabolism.

Euphenics Eugenics Euthenics All of these

Question 7 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 8 Of 10

Which of the following phenotypes in the progeny are possible from the parental combination

AandB only A,B andAB only AB only A,B,AB and O

Question 9 Of 10

Excess hair growth on pinna is a feature noticed only in males because ……………

Males produce more testosterone gene responsible for the character is located in Y-chromosome Estrogen suppresses the character in females females act only as a carriers for this character

Question 10 Of 10

Which blood group doesnot possess antibodies?

IAIB IOIO IAO IBIB

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Principles of Inheritance and Variation

Samacheer Kalvi 11th Biology - Principles of Inheritance and Variation - Book Back Questions in English Medium