module 6 Flashcards
what are the two options for reproduction
asexual reproduction and sexual
characteristics of asexual reproduction
-no single parent
-no fusion of gametes
-offspring are genetically identical
clone
off spring that are genetically identical
strategies of asexual reproduction
-binary fission
-budding
-clonal fragmentation
what is involved and not involved for binary fission in eukaryotes and prokaryotes
-in eukaryotes, mitosis is involved
-in prokaryotes, mitosis is not involved
binary fission
Asexual reproduction in single-celled organisms when cells grow to double its size and then double into two cells
clonal fragmentation
Form of asexual reproduction or cloning where an organism is split into fragments upon maturation and then split apart becomes the new individual
budding
type of asexual reproduction where a new organism develops from an outgrowth or bud due to cell division at a particular site
what does sexual reproduction lead to each generation
variation among offspring
where does sexual reproduction arise from
fusion of gametes
gametes
sex cell
what mechanisms contribute to variation among offspring
-independent assortment
-crossing over
-random fertilization
what is the original source of genetic variation
mutations
mutations due to errors are the original source of genetic variation ->
alleles
advantages and disadvantages of sexual reproduction
-energetically costly
-each offspring has 1/2 the parents genetic material
-results in variation among offspring
