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WorksheetsEvolution at the Population Level
Total questions: 16
Worksheet time: 17mins
In genetics, nucleotide bases in DNA refer to:
adenine, thyamine, guanine and cytosine (A, T, G and C)
adenine, uracil, guanine and cytosine (A, U, G and C)
the sugar backbone
homologous genes on different chromosome
A variant form of a gene (or genetic marker) is called:
An allele
A genotype
A phenotype
A polymorphism
In a diploid organism, the combination of its two alleles at a given locus is known as:
Its allele
Its phenotype
Its genotype
Its epigenotype
Phenotypes are produced by an interaction between:
Alleles and genotypes
Genotypes and environment
Gene flow and mutation
None of the above
Dominance in genetics refers to:
when the phenotypic effects of one allele are masked by another
when a single allele predominates in a population
when the phenotypic effects of one genetic locus depend on the genotype at another locus
when the fittest genes come to dominate a population
A multi-locus genotype refers to:
The sum total of all the alleles in an individual's genome
The genotype frequencies exhibited by a population
The combination of single-locus genotypes and individual shows across multiple loci
None of the above
A species is:
a collection of individuals in a given place
a collection of organisms that look similar
a collection of organisms that are genetically identical
a grouping of organisms that can interbreed and are reproductively isolated from other such groups
A population refers to:
the total number of one species in a particular area
the total number of all species in a particular area
organisms of the same species that are theoretically capable of interbreeding
none of the above
Allele frequencies refer to:
the relative frequency of a genotype at a particular locus in a population, expressed as a fraction or a percentage.
the number of alleles a particular individual carries
the relative frequency of an allele at a particular locus in a population, expressed as a fraction or a percentage.
the multi-locus genotype of an individual
Microevolution is a change in:
The phenotypic characteristics of a population over time
Genotype frequencies over time without a change in allele frequencies
Allele frequencies over time
The heritable characteristics of a population over time
Evolutionary fitness refers to:
the amount of oxygen in the blood pumped by the heart and transported to the working muscles, as well as the muscles efficiency in using that oxygen.
how good looking an individual is
how successful a particular genotype is at leaving offspring in the next generation relative other genotypes
an individual organism's capacity to survive and reproduce in a given environment
The differential survival and reproduction of individuals due to differences in phenotype is called:
Mutation
Genetic drift
Gene flow
Natural selection
The transfer of genetic variation from one population to another, by means of emigration/immigration, is known as.
Gene flow
Genetic drift
Mutation
Inbreeding
Which of the following statements is correct?
Mutation is a non-random process and selection a random process in evolution
Mutation is a random process and selection a non-random process in evolution
Both mutation and selection are random processes in evolution
Both mutation and selection are non-random processes in evolution
The Hardy-Weinberg law states that:
The phenotypic composition of a population will remain constant from one generation to the next unless acted on by outside forces.
Allele and genotype frequencies in a population will remain constant from one generation to the next unless acted on by outside forces.
Allele frequencies in a population inevitably increase from one generation to the next
Genotype frequencies in a population are always changing over
Imagine a very large population receiving immigrants from a population with different allele frequencies. Which of the following statements is correct?
This population would be in H-W equilibrium
This population would be in H-W equilibrium only if there was no natural selection or non-random mating
This population would be in H-W equilibrium only if there was no natural selection or non-random mating, AND mutation was negligible
None of the above
