- 3. Define the following terms. a . Pesticide b. Food insecurity c. Living Wage d. Food security
- Activity: Drag and drop to correctly complete each statement in the left hand column. Foodborne illness is caused by: Chemical contamination occurs when food is contaminated by: Physical contamination occurs when food is contaminated by: Biological contamination occurs when food is contaminated by: Most foodborne illnesses are caused by: cleaning products, pesticides and herbicides from unwashed fruit and vegetables. contaminated food. biological contamination. bacteria or other microorganisms. glass, staples, hair, bandages insects.
- Explain the ramifications to DNA replication if the following occurred: (4 marks) a) The single stranded binding proteins do not attach to the DNA backbone. b) The DNA ligase enzyme is not functioning properly.
- Codominance 14. A black chicken (BB)is crossed with a speckled chicken (BW). a Show the Punnett square for the cross. __ b. What is the predicted genotypic ratio for offspring? c. What are the chances of having a white chick? __
- 2. In guinea pigs, black eyes are dominant to red eyes. Choose a letter combination for
each phenotype.
\underline {\quad }=black\quad eyes\underline {\quad }=black\quad eyes\underline {\quad }=red\quad eyes3. In a guinea pig cross for eye color a Bb-guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 4. In a guinea pig cross for eye color a BB guinea pig was bred with a bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? 5. In a guinea pig cross for eye color a Bb guinea pig was bred with a Bb guinea pig. What percentage of the off spring should have Black eyes? What percentage should have red eyes? In guinea pigs, black eyes (BB, Bb ) are dominant to red eyes (bb)Short hair (HH,Hh)is dominant to long hair (hh) 6. A guinea pig with long hair (hh) is crossed with one that has short hair (H H). What percentage of the offspring will have short hair? 7. A guinea pig with long hair (hh)is crossed with one that has short hair (H h). What percentage of the offspring will have short hair?