2014 Flashcards
What is cell cleavage?
Splitting of zygote to form new cells
What is blastocyst?
Hollow ball of cells
What is implantation?
The implanting of embryo into endometrium
How meiosis contributes to variation?
Produces haploid cells
Far more common than expected and some very rare
Common phenotype a due to linkage
How are enzymes used in genetic modified crops?
Restriction endonuclease is used to cut desired gene and is used to cut open plasmids producing complementary sticky ends
Lipase used to join gene into plasmid
Why are large numbers of genetically identical plants produced?
Played in sterile aerated medium
Allows cells to form callus which is subdivided
Apply hormones to callus to differentiate into plant lets
Under what circumstances could the difference between Allele frequencies in populations be explained by genetic drift despite both living in beaches?
Small populations
What does a low ph mean?
Acidic
What is acrosome?
Releases enzymes which digest the zone pellucida
