Gene flow is

Sister chromatids are joined by a:

Which of the following is not found in Eukaryotic cells:

Select the organelles found in prokaryotic cells:

Which of the following is not a nitrogenous base found in RNA:

DNA can be described as being in a ________ structure.

DNA replication begins with the unzipping of the double stranded DNA molecule by breaking weak hydrogen bonds. This is achieved by the enzyme:

During DNA replication two complete double helices are produced. The parental strands are separated and each receives a new complementary strand. As a result of this process, one parental strand is retained from each replication to the next. This is called:

Sister chromatids are the result of:

Which of the following is not a DNA nucleotide?

A sequence of DNA was found to have the following bases: ATT CCG ATC. Which of the following is the correct sequence for the complementary DNA strand?

Both DNA and RNA are nucleic acids. How else are they similar?

Which statement about meiosis is correct?

Non-disjunction can result in:

A sperm contains:

Identify the enzyme represented by number 9.

What does number 7 represent?

The process that occurs during meiosis that ensures that each gamete is a mixture of maternal and paternal chromosomes is called:

DNA sequences that have been methylated:

Transfer RNA collects specific amino acids and transports them to the ribosome. The 3- nucleotide sequence on tRNA that interacts with the mRNA template is called:

Which of the following is incorrect regarding transcription?

The process of translation produces:

Edward’s syndrome is a disorder where individuals have an extra copy of chromosome 18. They suffer mental retardation, congenital defects of all organs and are typically dead by the age of 6 months. Edward’s syndrome is an example of:

Which of these changes is NOT the result of a mutation?

A random mutation may undermine the organism’s overall ability to survive. Such mutations are referred to as:

Cystic fibrosis (CF) is a genetic disorder that causes difficulty breathing, poor growth and a build-up of mucous in the lungs. The most common cause of CF is a deletion of three nucleotides from chromosome 7, which results in the loss of one amino acid. CF is an example of a:

Alternative forms of a gene are known as:

What is the definition of heterozygous?

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

Assume alleles A and a for a trait. If two heterozygous individuals are crossed, what is the resulting genotypic ratio?

What type of heredity is shown in the pedigree?

This type of inheritance pattern is a MIXTURE of both traits. (Red + White = Pink)

Colourblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colourblind.

In genetic engineering the ability to produce restriction fragments is essential. This achieved with enzymes called:

The technology that recombines DNA from different sources to modify the DNA sequence is called:

During gel electrophoresis several bands are separated. How do investigators know which band is the product of interest?

EcoRI is an example of a:

In a polymerase chain reaction, the first step is to separate the two strands of the DNA molecule. What is used to complete this step?

Forensic scientists use DNA profiling in criminal cases because very small samples can provide sufficient DNA. This is because:

Microevolution refers to:

Macroevolution refers to:

What percentage of the organisms that have ever lived on Earth are thought to be extinct?

The total collection of alleles within a population is referred to as:

What is a major source of variation in a population gene pool?

In wild herds of horses, young male horses are allowed to stay in the herd they were born into until they reach sexual maturity. The stallion will then chase them away. They stay with other young males, or may take over another herd of females if they can remove the existing stallion. If they can breed with the females in the new herd, which of the following will have occurred?

Which of the following would NOT be as selection pressure for a zebra?

What situations would not produce allopatric speciation?

Divergent evolution results in:

Which of the following would decrease a species’ risk of extinction?

Ants are the correct size and weight needed to open the flowers for the peony plant. The peony plant provides food for the ant and the ant fertilizes the peony’s flowers. What type of evolution is this an example of?

North American cactus and the African euphorbia that developed similar adaptation, which is their thick stems and sharp quills to survive the hot, arid climates. These two plant species are of different plant families but live in the same type of environment. What type of evolution is this an example of?

The beaver in North America and the capybara in South America share a common ancestor, but have evolved over time to look different. What type of evolution is this an example of?