Semester 2 Warm-Up

What is a gene?

• A section of DNA that codes for a particular protein

• Unit of heredity which is transferred from parent to older generations

• A long strand of DNA

• a unit of heredity that is found on an amino acid

Pictured are chromosomes of an organism that reproduces Asexually and one that reproduces sexually. Which picture represents the offspring of the sexually reproducing organism?

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Which of the following are beneficial for seed dispersal?

• Sweet fruit

• Sticky

• Bright Flowers

• Ability to float

• Strong Stem

What is gene therapy?

• process of replacing an absent or faulty gene with a normal working gene

• create copies of a particular gene

• physiological treatments to treat psychological disorders

• process of replacing all the genes in a persons DNA

The diagram shows where, in layers of rock, fossils of certain organisms were found. Which of the following is not supported by the diagram?

• Mammals descended directly from brachiopods

• Bivalves became extinct before mammals appeared on Earth.

• Foraminifera lived during the same periods as Bivalve.

• Brachiopods and Bivalve only live together for 3 periods.