others Flashcards
what is disruptive selection
acts against intermediate traits
what is stabilizing selection
selects intermediate traits
what is balancing selection
favors extreme trait favors multiple alleles like polymorphism (malaria and sickle cell)
what is direction selection
favors one extreme
what is the cortical reaction
it is the slow block of polyspermy - cortical granule to form a fertilization membrane to
what is the acrosome reaction
sperm releases hydrolytic enzyme from sperm to fuse with egg
what is the slow and fast block
slow is the cortical reaction ( cortical granules form a membrane)
fast is when the Ca+ is realised depolorizing the cell and prevents the sperm from entering
what phyla has joint appendadges
anthropoda
what skips genations auto/xlink dom/rec
autosomal recessive
all generations affected auto/xlink dom/rec
auto dominant
if father is affected all daughters affected auto/xlink dom/rec
x link dominant
male increase affected father never to son auto/xlink dom/rec
x link recessive
SDS page is for
seperating proteins by mass
gel electrophoresis is for
seperates dna based on charge
southern blotting is for
is for dna (SNOW DROP)
northern blotting is for
rna
western blotting is for
proteitns
xylem is for _____ phloem is for ______
xylem is for water phloem is for nutrients
PTH ____ Ca+
Calcitonin ____ Ca+
Calcitrol ____ Ca+
PTH __increases__ Ca+
Calcitonin __decreases__ Ca+
Calcitrol ___increases_ Ca+ (via digestive system)
layers of skin
come lets get some beer, corneum, lucidum granulosome spinosum basale
G1, G2,M, S put in order and what do they do
G1 growth
s - synthesis (dna replication)
G2 growth
M itosis (cell division)
Which of the following organelles would you expect to find in a prokaryotic cell? A. Mitochondria B. Endoplasmic Reticulum C. Lysosome D. Nucleus E. Ribosome
E ribosomes
what are pili
bridges between bacteria for conjugation
what ion leaks into cell for resting membrane
K+
