BIO.

what distinguishes bacteria from archaea? - Only bacteria have peptidoglycan in their cell walls Which of the following statements best describe the term synapomorphy? - a trait common in a single monophyletic group, but not generally found outside of that group In marine ecosystems, the main primary producers are ___? - photosynthetic protists Protists and bacteria are grouped into different domains because ___ - protists have a membrane-bounded nucleus, which bacterial cells lack W...

What are the key traits that define eukaryotes? - - very diverse lineage - diverse morphology (uni- and multicellular, range in size) - diverse reproduction (asexually by mitosis, sexually by meiosis) - membrane-bound organelles & DNA (nucleus) - linear chromosomes How did the nuclear envelope evolve? - Increased infoldings of prokaryotic plasma membranes led to the evolution of the nucleus and evolution by natural selection. What are the advantages of infoldings? - * Increases SA:V - ...

hemizygous - Describes an individual who has only one member of a chromosome pair or chromosome segment rather than the usual two. In bees, males are haploid and females are diploid - True Haploid - An organism or cell having only one complete set of chromosomes. Diploid - an organism or cell having two sets of chromosomes or twice the haploid number pleiotropy - when a single gene causes multiple phenotypes or affects multiple traits. gene flow - Movement of alleles into or out o...

Contrivance - an adaptation that is a result of the modification of a previous ancestor Adaptation - A trait that helps an organism survive and reproduce Exaptation - evolutionary adaptation of an existing structure for a completely new purpose Vestigial Trait - A trait inherited from a common ancestor but is no longer used dipliod cell - cell that has 2 copies of each chromosome, one from egg, one from sperm (46) Hapliod - having a single set of unpaired chromosomes, one egg (23)...