iCON Education - Principles of Inheritance and Variation AIIMS Test

Question 1: Palette 1/9

AIIMS 2019 MCQ

Mark the incorrect statement for inbreeding.

Inbreeding depression increases productivity

Inbreeding depression can be overcome by outcrossing

Produces purelines

Increases homozygosity

Question 2: Palette 2/9

AIIMS 2019 MCQ

Match the following columns and choose the correct option from the codes given below.

	Column I		Column II
A.	Pleiotropic gene	(i)	Both alleles express equally
B.	Co-dominance	(ii)	Change in nucleotides
C.	Epistasis	(iii)	One gene shows multiple phenotypic expression
D.	Mutation	(iv)	Non-allelic gene inheritance

A - (i), B - (ii), C - (iii), D - (iv)

A - (ii), B - (iii), C - (iv), D - (i)

A - (iii), B - (i), C - (iv), D - (ii)

A - (i), B - (iii), C - (iv), D - (ii)

Question 3: Palette 3/9

AIIMS 2019 MCQ

Blood group of the father is ‘A’ and blood group of mother is ‘B’. Then predict the blood group of the progeny

A, AB

A, B, AB, O

B, AB

O, A, B

Question 4: Palette 4/9

AIIMS 2019 MCQ

Assertion : Down’s syndrome, Klinefelter’s syndrome and Turner’s syndrome are chromosomal disorders.

Reason : In Klinefelter’s syndrome females are sterile.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true, but reason is not the correct explanation of assertion.

If assertion is true, but reason is false.

If both assertion and reason are false.

Question 5: Palette 5/9

AIIMS 2018 MCQ

Select the incorrect statement(s) from the options given below with respect to dihybrid cross.

I. Tightly linked genes on the same chromosome show higher recombinations.

II. Genes far apart on the same chromosome show very few recombinations.

III. Genes loosely linked on the same chromosome show similar recombinations.

I and II

III and II

I and III

All of these

Question 6: Palette 6/9

AIIMS 2018 MCQ

A normal woman whose father was colourblind, marries a normal man. What kinds of children can be expected and in what proportion?

All daughters normal, $50 \%$ of sons colourblind

All daughters normal, all sons colourblind

$50 \%$ daughters colourblind, all sons normal

All daughters colourblind, all sons normal

Question 7: Palette 7/9

AIIMS 2018 MCQ

Which one of the following conditions correctly describes the manner of determining the sex?

Homozygous sex chromosomes (ZZ) determine female sex in birds

XO type of sex chromosomes determine male sex in grasshopper

XO condition in humans as found in Turner's syndrome determines female sex

Homozygous sex chromosomes (XX) produce males in Drosophila

Question 8: Palette 8/9

AIIMS 2018 MCQ

Assertion Phenylketonuria is recessive hereditary disease caused by body’s failure to oxidise an amino acid phenylalanine to tyrosine, because of defective enzyme.

Reason It is characterised by in the presence of phenylalanine acid in urine.

Both A and R are true and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

A is true, but R is false

A and R are false

Question 9: Palette 9/9

AIIMS 2018 MCQ

Assertion The non-allelic genes for red hair and prickles are usually inherited together.

Reason The genes for red hair and prickles are located on the same chromosome in close association.

Both A and R are true and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

A is true, but R is false

A and R are false