Question

1. what is selective breeding?
2. your genes and your _______________ play a big part in forming your traits.
3. animals get a combination of trait from the __________ and the __________.
4. an animal which is identical to one parent is called a _______________.
5. lab activity page 118. draw lines to complete the chart below and complete it with your information.

feature | trait | dominant or recessive?
hairline | |
earlobe | |
eyelashes | |

1. which dominant traits do you have?
2. which recessive traits do you have?
3. which cow produces 12,800 lbs of milk each year? _______________
4. which cow is the largest? _______________
5. which cow gives milk with 5.2% of butterfat? _______________

Explanation:

1. Defined as intentional breeding for desired traits.
2. Environment interacts with genes for traits.
3. Offspring inherit traits from both parents.
4. Clone is genetically identical to one parent.
5. Chart uses common human trait dominance patterns.

6.-7. Based on standard dominant/recessive trait classifications.
8.-10. Based on common dairy cow breed characteristics.

Answer:

1. Selective breeding is the process of intentionally choosing parents with desirable traits to breed, producing offspring with those desired traits.
2. environment
3. mother; father
4. clone

5.

Feature	Trait	Dominant or Recessive?
Hairline	Straight hairline	Recessive
Earlobe	Free earlobe	Dominant
Earlobe	Attached earlobe	Recessive
Eyelashes	Long eyelashes	Dominant
Eyelashes	Short eyelashes	Recessive

1. Example dominant traits: Widow's peak, free earlobes, long eyelashes
2. Example recessive traits: Straight hairline, attached earlobes, short eyelashes
3. Holstein
4. Chianina (or Maine-Anjou, common large beef cow; if dairy, Brown Swiss)
5. Jersey