BIOLOGY 101 – What is required for speciation to occur
BIOLOGY 101 – What is required for speciation to occur
Subject: Biology / General Biology
Question
Note: It is recommended that you save your response as you complete each question.
Question 1 (5 points)
What is required for speciation to occur?
Question 1 options:
Periods of rapid evolutionary change
Geographic isolation
Long periods of time
Genetic isolation
SaveQuestion 2 (5 points) The wing of a bird and the arm of a human are examples of ________ structures.Question 2 options:
vestigial
molecular
homologous
analogous
SaveQuestion 3 (5 points)
Homology is evidence of ______, while analogous structures are evidence of ______.
Question 3 options:
convergent evolution; common ancestry
punctuated evolution; divergent evolution
common ancestry; convergent evolution
paedomorphosis; stabilizing selection
Save Previous PageNext PagePage 1 of 7
Quiz
Previous PageNext PagePage 2 of 7
Note: It is recommended that you save your response as you complete each question.
Question 4 (5 points)
Below are examples of changes that occur in life. Which one is an example of biological evolution?
Question 4 options:
A cell starts to express a different set of genes when it is exposed to high levels of testosterone.
Your taste in music changes dramatically between middle school and high school.
A young man’s muscles increase in strength and bulk after he starts lifting weights.
In New York City, the average wing length of pigeons decreases over a period of 150 years.
SaveQuestion 5 (5 points) The word “theory” in theory of evolution is best replaced by ________.Question 5 options:
fact
hypothesis
idea
alternate explanation
SaveQuestion 6 (5 points) Individual differences with a genetic basis lead to ______ in successive generations.Question 6 options:
variation
normalization
extinction
Save Previous PageNext PagePage 2 of 7
Quiz
Previous PageNext PagePage 3 of 7
Note: It is recommended that you save your response as you complete each question.
Question 7 (5 points)
Which variable increases the likelihood of allopatric speciation taking place more quickly?
Question 7 options:
Equivalent numbers of individuals in each population
Increased instances of hybrid formation
Longer distance between divided groups
Lower rate of mutation
SaveQuestion 8 (5 points) Phylogeny is a description of ____________.Question 8 options:
mutations
DNA
evolutionary history
organisms on Earth
SaveQuestion 9 (5 points)
Examine the phylogenetic tree. The organism at point C was ___________.
Question 9 options:
an ancestor that had some features now shared by both Archaea and Eukarya
an Archaean similar or identical to Pyrodicticum
a Diplomonad or similar eukaryote
Save Previous PageNext PagePage 3 of 7
Quiz
Previous PageNext PagePage 4 of 7
Note: It is recommended that you save your response as you complete each question.
Question 10 (5 points)
Complete the following analogy: Microevolution is to population as macroevolution is to ______________.
Question 10 options:
genes
reproduction
individuals
speciation
SaveQuestion 11 (5 points)
Microevolution is defined as _______________.
Question 11 options:
changes in the frequency of alleles in the gene pool
emergence of new species
changes in population size
changes in the composition of the population
changes in community size
SaveQuestion 12 (5 points) Which of the scenarios below represent a gene pool that has changed through some process of microevolution?Question 12 options:
A moth population increases from 3,000 individuals to 33,000 individuals over a period of favorable weather.
Your cells express different genes today than they did when you were born.
A mouse population (about 10,000 mice total) starts with 99% of the mice tan and 1% white; after 20 years 70% are tan and 30% are white.
Save Previous PageNext PagePage 4 of 7
Quiz
Previous PageNext PagePage 5 of 7Note: It is recommended that you save your response as you complete each question. Question 13 (5 points)
Geographic isolation could result from ____________.
Question 13 options:
an earthquake
a hurricane
all of the above
a fire
an ice age
Save Question 14 (5 points)
Elephants travel long distances in search of food. Using vibrations felt in the ground, family members traveling separately can communicate with each other. Based on your knowledge of evolution, the ability to communicate over long distances probably developed ___________________________.
Question 14 options:
slowly over millions of years
by accident
over a ten year period
as a strategy to decrease reproduction
as a way to communicate with humans
Save Question 15 (5 points) After a disastrous blizzard, there was a significant increase in the allele frequency of blue eye color in Husky dogs. The frequency of alleles for brown-eyed dogs was 7.5% and the allele frequency for hazel-eyed dogs was 22.5% of all alleles for the population. What is the allele frequency percentage for the blue-eyed Husky dogs in this population?Question 15 options:7.5 22.5 30 70 Save Previous PageNext PagePage 5 of 7
Quiz
Previous PageNext PagePage 6 of 7Note: It is recommended that you save your response as you complete each question. Question 16 (5 points)
A food poisoning outbreak is traced to a new strain of Salmonella bacteria that has a highly potent version of the enterotoxin protein. This toxin is partially responsible for the vomiting and diarrhea associated with Salmonella food poisoning. This is an example of ______________.
Question 16 options:
mutation.
gene flow
genetic drift
macroevolution
Save Question 17 (5 points)
What are the similarity of fish, frog, bird, and human embryos evidence of?
Question 17 options:
Analogy
Common ancestry
Genetic Drift
Genetic mutation
Save Question 18 (5 points)
After a drought in 1977, the number of birds on Daphne Major Island decreased by ___________ times compared with the original population size.
Question 18 options:
20
8
2
12
Save Previous PageNext PagePage 6 of 7
Quiz
Previous PageNext PagePage 7 of 7Note: It is recommended that you save your response as you complete each question. Question 19 (5 points)
The 1977 drought was followed by a significant increase in the proportion of medium ground finches with large bills. Based on the graphs, the mean (average) beak depth size approximately changed __________________.
Question 19 options:
from 13mm to 14.2mm
from 8mm to 13mm
from 9.5mm to 12mm
from 9.5mm to 10.2mm
Save Question 20 (5 points)
After the 1977 drought, the main finding about the medium ground finches on Daphne Major Island was that __________________.
Question 20 options:
fewer large-beaked finches survived
small-beaked finches outnumber large-beaked finches
the average size of their beaks increased
more large-beaked finches died
Save Previous PageNext PagePage 7 of 7