MCQs Zoology-22 Posted on 2025-11-122025-12-03Author admin 0 Table of Contents Toggle MCQs Zoology-22MCQs Zoology-22 MCQs Zoology-22 1. Dolly, the first cloned sheep, was produced in __________ 2006 1996 1999 1990 2. What is the benefit of metameric segmentation in annelids? Better defense mechanisms Increased reproductive success Enhanced sensory perception Improved locomotion and burrowing 3. The primitive gut, i.e., enteron, develops during which stage of embryonic development? Gastrulation Morphogenesis Neurulation Organogenesis 4. The central dogma of molecular biology describes the flow of genetic information as _____________ Protein → DNA → RNA RNA → DNA → Protein DNA → RNA → Protein DNA → Protein → RNA 5. ___________ first coined the term “epigenetics” in the 1940s Robin Holliday Arthur Riggs Conrad H. Waddington Barbara McClintock 6. What is the defining characteristic of imprinted genes? Permanently inactivated in all cells Code for epigenetic silencing machinery High rate of spontaneous mutation Expression determined by parental origin, leading to monoallelic expression 7. A segment of DNA that codes for a specific protein or functional RNA molecule, and thus determines a specific trait, is called a(n) ———— Gene Nucleotide Chromosome Allele 8. Non-coding RNAs, such as microRNAs (miRNAs), can be considered part of epigenetic regulation because they___________ Are the primary components of chromatin Regulate gene expression at the post-transcriptional level without altering the DNA sequence Code for histone proteins Directly repair DNA damage 9. Inbreeding depression is primarily caused by __________ Overdominance Accumulation of deleterious recessive alleles Gene flow Increased heterozygosity 10. The first chemical mutagen ever discovered was __________. Mustard gas Ethyl Methanesulfonate Nitrosoguanidine 5-Bromouracil Loading … MCQs Zoology-22
