Lecturer Zoology Solved Past Paper MCQs Online Test No. 60

Natural selection is most nearly the same as:

The biological species concept is inadequate for grouping:

What was the species concept most used by Linnaeus?

The most likely explanation for the recent decline in cichlid species diversity in Lake Victoria is:

If, on average, 46% of the loci in a speciesʹ gene pool are heterozygous, then the average homozygosity of the species should be

Natural selection changes allele frequencies in populations because some..................survive and reproduce more successfully than others.

A trend toward the decrease in the size of plants on the slopes of mountains as altitudes increase is an example of

In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.1. What is the percentage of the population that is heterozygous for this allele?

The largest unit within which gene flow can readily occur is a

You sample a population of butterflies and find that 42% are heterozygous at a particular locus. What should be the frequency of the recessive allele in this population?

Gene flow is a concept best used to describe an exchange between:

One species lives only in tree holes; another species lives only in streams. What sort of barrier exists between these two species?

Males of one species are too small to perform amplexus (an action that stimulates ovulation) with females of all other species. What sort of barrier exists between these two species?

Which of these evolutionary agents is most consistent at causing populations to become better suited to their environments over the course of generations?

The phenotypic characters which vary along a continuum in a population are termed as:

In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of the allele a is 0.4. What is the percentage of the population that is homozygous for this allele?

Which species concept is currently most popular among most biologists?

Who would have proposed that the boundaries between each stratum mark the occurrence of different localized floods?

Females of one species choose mates based on song quality; females of another species choose mates on the basis of size. What sort of barrier exists between these two species?

In a Hardy-Weinberg population with two alleles, A and a, that are in equilibrium, the frequency of allele a is 0.2. What is the frequency of individuals with Aa genotype?

Contribution an individual makes to the gene pool of the next generation is?

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

Fossil evidence indicates that horses have gradually increased in size over geologic time. Which of the following terms best describes this?

Which of the various species concepts distinguishes two species based on the degree of genetic exchange between their gene pools?

Heterozygote advantage should be most closely linked to which of the following?