University:
Acadia University
Course:
BIOL 2663 | Marine Biology
Academic year:

2024
Views:

213

Pages:

4
Author:

Nabila n.

Quiz on Allopatric speciation 1. What is the primary outcome of geographic isolation in allopatric speciation? A. Increased gene ﬂow between populations B. Uniform traits across populations C. Distinct species evolve from isolated populations D. Reinforced interbreeding among populations Answer: Distinct species evolve from isolated populations (C) Geographic isolation leads to the evolution of distinct species by preventing gene ﬂow. 2. Which mechanism is NOT a driver of genetic divergence in isolated populations? A. Enhanced migration B. Mutation C. Different selective pressures D. Genetic drift Answer: Enhanced migration (A) Enhanced migration would promote gene ﬂow, which counters genetic divergence. 3. What type of reproductive isolation occurs when populations can no longer interbreed due to time-based differences in mating? A. Behavioral isolation B. Mechanical isolation 2 C. Temporal isolation D. Gametic isolation Answer: Temporal isolation (C) Temporal isolation prevents interbreeding by differing timing of reproductive events. 4. How does genetic drift impact smaller isolated populations during allopatric speciation? A. It has no effect on allele frequencies B. It eliminates mutations from the population C. It always enhances genetic uniformity D. It can lead to random changes in allele frequencies Answer: It can lead to random changes in allele frequencies (D) Genetic drift can signiﬁcantly inﬂuence allele frequencies in smaller populations. 5. Which of the following barriers can lead to geographic isolation? A. Common mating rituals B. Shared feeding grounds C. Mountain ranges D. Similar climates Answer: Mountain ranges (C) Mountain ranges act as physical barriers to prevent populations from interbreeding. 6. What is an example of peripatric isolation? 3 A. Rivers form between existing populations B. A glacier separates a large population C. Large mountain ranges separate two large populations D. A small group of frogs inhabits an isolated pond at the edge of their range Answer: A small group of frogs inhabits an isolated pond at the edge of their range (D) Peripatric isolation involves a small portion of a population being isolated at the edge of their range. 7. Which evolutionary phenomenon allows for the adaptation of isolated populations to local environmental conditions? A. Hybrid vigor among divergent populations B. Increased genetic compatibility C. Natural selection promoting advantageous traits D. Uniform selection across diverse environments Answer: Natural selection promoting advantageous traits (C) Natural selection favors traits that improve survival and reproductive success in local conditions. 8. Which of the following examples illustrates allopatric speciation? A. Different species of wolves in the same area exhibiting varied diets B. All birds in a region migrating at the same time C. Bears evolving to have similar fur patterns across regions D. Finches on the Galapagos Islands developing distinct beak shapes 4 Answer: Finches on the Galapagos Islands developing distinct beak shapes (D) The ﬁnches on the Galapagos Islands are a classic example of adaptive radiation leading to allopatric speciation.