STM 008

Front

What is the significance of the Permian-Triassic boundary?

Back

It marks one of the most significant mass extinctions in Earth’s history, wiping out around 96% of marine species.

Front

What does an investigator look for to identify an individual by DNA analysis of their blood?

Back

DNA fingerprints.

Front

What is the process of removing DNA from a sample of an organism containing the gene of interest?

Back

DNA Extraction.

Front

What is the difference between an epoch and a period in the Geological Time Scale?

Back

An epoch is a smaller subdivision within a period, while a period is a larger division of geological time.

Front

What are homologous structures?

Back

They are similar in morphology, anatomy, genetics and embryology but are dissimilar in function.

Front

What is the definition of mass extinction?

Back

A mass extinction is a widespread and rapid decrease in the biodiversity on Earth, typically characterized by the extinction of a large number of species in a relatively short period of geological time.

Front

What is gene cloning?

Back

Gene cloning is the process of making multiple copies of a specific gene or DNA segment.

Front

What is the role of primers in DNA analysis?

Back

Primers are short sequences of nucleotides that provide a starting point for DNA synthesis during PCR (Polymerase Chain Reaction).

Front

What is the function of probes in DNA analysis?

Back

Probes are labeled DNA or RNA sequences used to detect the presence of complementary sequences in a sample.

Front

What is backcross breeding?

Back

Backcross breeding is a breeding method where an offspring is crossed with one of its parents or an individual genetically similar to its parent.