DMIT Genetic & Developmental Basis of Fingerprints

Question 1

During which week of fetal development do fingerprint ridge patterns begin to form?

Accepted Answer

10th to 16th week

Answer

6th to 8th week

Answer

20th to 24th week

Answer

28th to 32nd week

Question 2

Which skin layer is primarily responsible for forming the ridge patterns seen in fingerprints?

Accepted Answer

Epidermis

Answer

Hypodermis

Answer

Dermis

Answer

Stratum corneum

Question 3

What is the primary reason identical twins have different fingerprints even though they share the same DNA?

Accepted Answer

Random environmental factors in the womb affecting ridge formation

Answer

Different epigenetic methylation patterns

Answer

Mutations occurring after fertilization

Answer

Different maternal nutrition intake

Question 4

In dermatoglyphics research, the term 'Total Ridge Count' (TRC) refers to:

Accepted Answer

The sum of ridge counts across all ten fingers

Answer

The total number of fingerprints with loop patterns

Answer

The number of triradii found on all fingers combined

Answer

The average ridge density per square centimeter

Question 5

Which scientific field first established the study of fingerprint ridge patterns as a means of understanding human genetics and development?

Accepted Answer

Dermatoglyphics

Answer

Forensic science

Answer

Anthropology

Answer

Biometrics

Question 6

Chromosomal abnormalities such as Down syndrome (Trisomy 21) are often associated with which distinctive dermatoglyphic feature?

Accepted Answer

A single palmar crease (simian line)

Answer

Absence of whorls on all fingers

Answer

Radial loops on all ten fingers

Answer

Extremely high total ridge count

Question 7

Which researcher is credited with coining the term 'dermatoglyphics' in 1926?

Accepted Answer

Harold Cummins

Answer

Francis Galton

Answer

Juan Vucetich

Answer

Karl Pearson