WHAT IS SELECTIVE BREEDING? Selective breeding is the breeding of offspring based on certain traits or characteristics that the breeder desires to reproduce in the offspring.

BELGIAN BLUE CATTLE

+Artificial Insemination =

What Causes “double muscling”? A mutation in the myostatin gene.

THE MEAT… Highly nutritious Contains less fat Tender

Individuals Swollen and painful joints. Cardio-vascular problems. Macroglossia. High number of Caesarean sections. Evolution Evolution has been altered as the result of selective breeding. The double muscling trait would have died off naturally as a result of selection pressures. Phenotype would be very different without selective breeding. BIOLOGICAL IMPACTS

Population Narrowed the biodiversity of the Belgian Blue’s.

DESIGNER MILK Modified Milk Kappa Casein enriched Therapeutic Milk Contains Myelin

METHOD USED TO MAKE A TRANGENIC COW Designing a gene construct. Source the transgene. Produce a gene construct. Transfection. Selecting the transgenic cell. Nuclear transfusion. Testing to confirm the cow is transgenic. Where did I come from?

BIOLOGICAL IMPACTS Individuals Dangerous for the cows wellbeing. Higher mortality rate. Increase in the number of caesarean sections to deliver larger cows. Genetic Biodiversity Positive impact initially. Negative impact on biodiversity in the future. Original genes may be lost over time. ….Also on the POPULATION

SELECTIVE BREEDING vs. TRANSGENESIS

The End