Question 1

When two alleles on the same gene are not identical, they are called heterozygous.​

Accepted Answer

Heterozygous means having two different alleles on the same gene, so the statement is true.

Question 2

Humans are primates.​

Accepted Answer

Humans belong to the order Primates, which also includes other mammals such as apes, monkeys, and lemurs.

Question 3

If two body cells merge in meiosis, the result is a cell with 46 pairs of chromosomes.​

Accepted Answer

Meiosis involves the separation of pairs of chromosomes, resulting in haploid cells with 23 chromosomes each. If two body cells merged in meiosis, the result would violate this process and likely result in a cell with an abnormal number of chromosomes.

Question 4

A bat's wing is analogous to a human hand.​

Accepted Answer

The answer of A bat's wing is analogous to a...

Question 5

Uniformitarianism is a more recent theory than catastrophism.​

Accepted Answer

Uniformitarianism is a more recent theory than catastrophism. Catastrophism was the dominant geological theory in the 18th and early 19th centuries, while uniformitarianism gained prominence in the mid-19th century.

Question 6

Evolution is the central organizing principle of the biological sciences.

Accepted Answer

Evolution is the unifying concept of biology, explaining the diversity of life on Earth and how all living organisms are related through descent from a common ancestor. It provides a framework for understanding the origin and history of species, genetic variation, and the mechanisms of adaptation and speciation. Therefore, it is considered the central organizing principle of biological sciences.

Question 7

The complete sequence of human DNA is called the genome.​

Accepted Answer

The complete sequence of human DNA is indeed called the genome.

Question 8

In the search for disease cures, scientists often predict an individual's genotype.​

Accepted Answer

Scientists often predict an individual's phenotype, which is the observable characteristics, rather than genotype, which is the genetic makeup, to understand how diseases manifest and respond to treatments.

Question 9

The existence of Homo sapiens as an interbreeding species is due to gene flow.​

Accepted Answer

Gene flow, which is the transfer of genetic material from one population to another, has played a significant role in allowing Homo sapiens to interbreed with other human species such as Neanderthals and Denisovans. The resulting gene flow has contributed to the genetic diversity of modern humans.

Question 10

DNA provides the instruction for the thousands of proteins that keep us healthy every day.​

Accepted Answer

DNA contains the genetic code that provides instructions for the synthesis of proteins, which are essential for the maintenance of normal bodily functions.

Question 11

Linnaeus's classificatory system reflected a new understanding of life on earth at that time.

Accepted Answer

Linnaeus's classificatory system was based on a new understanding of the diversity of life on earth, which included the recognition of the concept of species and the development of a hierarchical system of classification based on shared characteristics. This was a major departure from earlier views of the natural world, which were more focused on the supernatural and mythological aspects of nature.

Question 12

Founder effects are a kind of genetic drift.​

Accepted Answer

Founder effects occur when a small group of individuals becomes isolated from a larger population, contributing to a random shift in the gene pool of the new population due to the limited genetic diversity of the founders. This is a form of genetic drift, which refers to the random fluctuation of allele frequencies in a population over time.

Question 13

Testing for DNA is the best way to determine those who form part of an individual's family.​

Accepted Answer

While DNA testing is a powerful tool for determining biological relationships, it is not the only way to determine family connections. Social, legal, and emotional bonds also play crucial roles in defining family relationships, and not all family members are biologically related.

Question 14

Genes are particulate, meaning that they are separate structures rather than portions of DNA.​

Accepted Answer

Genes are not separate structures, but rather specific sequences of DNA located on chromosomes.

Question 15

The only source of new genetic material is random drift.​

Accepted Answer

Random drift is a mechanism of evolution, but it is not the only source of new genetic material. Other sources include mutation, gene flow, and natural selection.

Question 16

Even prior to Darwin's publication, many European naturalists accepted the idea that life had evolved.​

Accepted Answer

This is true. Before Darwin's publication of "On the Origin of Species" in 1859, many naturalists in Europe had already accepted the idea that life had evolved over time, although they did not always have a complete understanding of the mechanisms of evolution. Examples include Jean-Baptiste Lamarck and Georges Cuvier.

Question 17

The "system of nature" is an approach to classify all of animate and inanimate nature.​

Accepted Answer

The answer of The "system of nature" is an approach...

Question 18

Darwin could not initially understand how variation occurred in living organisms.​

Accepted Answer

Darwin wasn't aware of the genetic mechanisms of variation, which were discovered later by scientists like Gregor Mendel.

Question 19

Mendel published his findings in a respectable scientific journal, but no one understood their significance until after his death.​

Accepted Answer

Mendel's work was largely overlooked during his lifetime and it was only after his death that other scientists recognized the significance of his discoveries.

Question 20

Taxonomy is an ancient form of classification created by Linnaeus that is no longer used today.​

Accepted Answer

Taxonomy, as a system for classifying organisms, is still heavily used today and continues to evolve with new scientific discoveries. Linnaeus, as the father of modern taxonomy, laid the foundation for this system, but it has since been expanded and refined by many other scientists.

Quiz 2: Biology Genetics and Evolution

When two alleles on the same gene are not identical, they are called heterozygous.​

Humans are primates.​

If two body cells merge in meiosis, the result is a cell with 46 pairs of chromosomes.​

A bat's wing is analogous to a human hand.​

Uniformitarianism is a more recent theory than catastrophism.​

Evolution is the central organizing principle of the biological sciences.

The complete sequence of human DNA is called the genome.​

In the search for disease cures, scientists often predict an individual's genotype.​

The existence of Homo sapiens as an interbreeding species is due to gene flow.​

DNA provides the instruction for the thousands of proteins that keep us healthy every day.​

Linnaeus's classificatory system reflected a new understanding of life on earth at that time.

Founder effects are a kind of genetic drift.​

Testing for DNA is the best way to determine those who form part of an individual's family.​

Genes are particulate, meaning that they are separate structures rather than portions of DNA.​

The only source of new genetic material is random drift.​

Even prior to Darwin's publication, many European naturalists accepted the idea that life had evolved.​

The "system of nature" is an approach to classify all of animate and inanimate nature.​

Darwin could not initially understand how variation occurred in living organisms.​

Mendel published his findings in a respectable scientific journal, but no one understood their significance until after his death.​

Taxonomy is an ancient form of classification created by Linnaeus that is no longer used today.​

When two alleles on the same gene are not identical, they are called heterozygous.

Humans are primates.

If two body cells merge in meiosis, the result is a cell with 46 pairs of chromosomes.

A bat's wing is analogous to a human hand.

Uniformitarianism is a more recent theory than catastrophism.

The complete sequence of human DNA is called the genome.

In the search for disease cures, scientists often predict an individual's genotype.

The existence of Homo sapiens as an interbreeding species is due to gene flow.

DNA provides the instruction for the thousands of proteins that keep us healthy every day.

Founder effects are a kind of genetic drift.

Testing for DNA is the best way to determine those who form part of an individual's family.

Genes are particulate, meaning that they are separate structures rather than portions of DNA.

The only source of new genetic material is random drift.

Even prior to Darwin's publication, many European naturalists accepted the idea that life had evolved.

The "system of nature" is an approach to classify all of animate and inanimate nature.

Darwin could not initially understand how variation occurred in living organisms.

Mendel published his findings in a respectable scientific journal, but no one understood their significance until after his death.

Taxonomy is an ancient form of classification created by Linnaeus that is no longer used today.