The slide of stages in starfish development illustrates stages from unfertilized egg to gastrula—typical of echinoderms and chordates that have very little yolk in the egg. Three embryonic cell layers—ectoderm, endoderm, and mesoderm—are established. All adult tissues are derived from these layers.
Answer:
Ducks, pelicans, crocodiles, platypuses, along with some frogs, dogs, and cats.
Drug resistance only arises from an organism gaining the genetic information for the resistance from another organism.
Answer: True
Xx * Xx = XX, Xx, Xx, xx
Depending if black hair is Dominant or recessive, then there will be a 75% chance if it’s a dominant allele and 25% if it’s recessive.
Hope this helps!
