The distribution of chromosomes in one type of cell division is shown in the diagram below. Which process is being represented in the diagram?

Which letter(s) in the diagram correspond to cells that are haploid?

Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?

In which phase of meiosis would certain gene segments of the homologous pairs of chromosomes "crossover" and exchange genetic information?

Which cells are NOT formed during meiosis?

Two similar chromosomes that you inherit from your parents (one from your mother and one from your father) are called

Which event takes place during anaphase II of meiosis?

Somatic cells in humans contain ____ chromosomes and an example is ______

Chromosomes line up in the middle of the cell single file during which phase?

In humans, where does DNA replication take place?

A sequence of nucleotides found in the DNA of a chromosome codes for a specific protein or trait. This section of DNA is known as a(n)

RNA from a chipmunk is compared to RNA from a worm. Both will contain the

A scientist is doing an experiment to identify different molecules. Some components of these molecules are listed in this table. Which of the four molecules is the DNA, based on the table to the right?

The diagram shown here represents a portion of a nucleic acid molecule. The part indicated by the arrow could be

A DNA nucleotide could contain the following molecules

Which of the following nucleic acids contains thymine?

Base your answer to this question on the diagram shown to the right AND on your knowledge of biology. Structures 3 and 4 are held together by

DNA is a polymer consisting of monomers known as

In nucleotides, the letters A, G, C, and T represent

The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?

The molecule copied directly from DNA is represented by number

What is an example of a molecule produced by the process shown above?

Structure number 2 represents a

The bond represented by number 5 is a ____ bond

If a portion of a messenger RNA molecule contains the base sequence A-A-U, then the corresponding anti-codon on the tRNA base sequence is

The sequence of ________________ in a DNA molecule determines the protein that will be produced.

During _____________, the cell uses information from messenger RNA to produce proteins.

How many amino acids are coded for by the strand of mRNA shown here? Assume the reading frame begins with the first nucleotide. AUGUAC

Which base is normally used in the synthesis (making) of RNA but not in the synthesis (making) of DNA?

Given the sequence of DNA nucleotide bases TAGTAGTAG, give the complementary strand of mRNA produced during transcription.

During protein synthesis, what does mRNA do?

Subunit that makes up nucleic acids

Subunit that makes up proteins

A portion of a chromosome that codes for a single protein

A portion of DNA that is condensed and rod-like

A set of 3 nucleotides that code for a specific amino acid

tRNA brings amino acids to the

tRNA has

tRNA transfers amino acids during

The step of protein synthesis that occurs in the cytoplasm is

The form of a gene that is always expressed if present is the ___ form.

Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?

What law BEST explains why an organism with ‘Tt’ will show only the dominant phenotype?

If an organism inherits one dominant allele and one recessive allele for eye color, their genotype would be:

Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that any of their children will inherit the disorder?

Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to each of their offspring?

B represents the dominant gene for blue feathers and b represents the recessive gene for red feathers. A homozygous dominant and a homozygous recessive bird mate. What percent chance does the offspring have for red feathers?

In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What must be the genotypes of the parents to create this phenotypic ratio?

Imagine two heterozygous parents. Each has a dominant allele A for brown eyes and a recessive allele for blue eyes. What would the genotypic ratio of the offspring be?

For an XX female to express a recessive sex-linked trait, she must have

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it a(n)

Red hair and freckles are commonly inherited together. Which of following patterns of inheritance explains this?

One of the major elements of natural selection is that all species have genetic

A population of bacteria is treated with hand sanitizer. Because of genetic variation in the population, what is a possible outcome?

One of the biggest ways that a species evolves is because some organisms with some traits survive and reproduce better than others. This process is known as

Genes for traits that help an organism be more successful reproductively can be expected to

An adaptation is

Genetic diversity is ultimately/mainly the result of

Which of the following does NOT increase genetic variation?

Which of the following is not a principle of natural selection?

Which of the following is not an example of evolution?

Individuals that are well adapted to their environment will survive and produce

Organisms that live in similar environments, such as the ocean, often have similar adaptations. This is often due to

Which pattern of evolution results in one species splitting into many over time?

Multiple species evolving from a common ancestor.

Burst of evolutionary change followed by periods of stability.

Formation of a new species from a pre-existing species.

Slow evolutionary changes over a long period of time.

When two organisms evolve in response to the other.

When unrelated species evolve similar characteristics because they live in similar environments.

If scientists wanted to learn more about evolution by studying biochemistry, they would study all but one of these molecules. Which molecule would NOT offer much information about the history of life?

Scientists can explore whether two different animal species have evolved from a common ancestor, using evidence from all of the sources below except

The table to the right shows the order of amino acids present in a protein from five different organisms. Based on this evidence, a researcher could conclude that the two closest relatives are

Two bodily structures, found in different species, have different internal bone structures but serve a similar purpose in each organism. This is the best description of

In the table to the right, the DNA found in five primate species was compared to the DNA found in humans. The number of sequence differences was recorded. Based on the data in this table, what inference could you make about these species compared to humans?

Ostriches have wings, but do not fly. Humans have an appendix with no apparent function. Whales contain bones for rear legs. Each of these are examples of

The best example of an analogous structure would be

Evidence of evolution from the field of paleontology examines

Early during development, organisms as diverse as a human, a mouse, and a bat can appear indistinguishable. All of their embryos look nearly identical, suggesting that

Fossil evidence shows that structures considered vestigial in living organisms

Which scientist developed a classification system for organisms?

According to binomial nomenclature, species are given two names based on their

Which one of these is most closely related to the organism on the left?

Which of the following sequences shows the correct hierarchy of classification, going from broadest to most specific?