reproductive technologies

Question 1

freezing seamen

Answer 1

perfected for bulls in the late 1940s, the the modern AI era for dairy cattle began

Question 2

AI

Answer 2

allowed sperm to be separated from seminal plasma, which carried general diseases. the sperm was resuspended in a cell medium with antibiotics that helped prevent disease transmission

Question 3

estrus synchronization

Answer 3

causing large groups of cows to express estrus together, this facilitates AI and shortens the breeding and birthing season, used mostly with cattle

Question 4

super ovulation and embryo transfer

Answer 4

developed to obtain large numbers of offspring from genetically superior cows. ovaries are stimulated with hormones from the pituitary gland to promote growth of many follicles

Question 5

sexing seamen

Answer 5

X and Y bearing sperm can be separated with 85-90% accuracy, allows the inseminator to pick the sex of the offspring