lecture, slide 5, reproduction Flashcards
true or false,
reproduction is a definer of life
true
life comes from life, asexually or ____________
or sexually
define asexual reproduction
an organism produces genetically identical copy of itself
- offspring is clone of parent
examples of organisms that use asexual reproduction
bacteria, some cnidarians, annelids, and echinoderms
name 4 types of asexual reproduction
- binary fission
- budding
- gemmulation
- fragmentation
define binary fission
a type of asexual reproduction,
parent divides via mitosis into two identical individuals
(ejemplo - unicellular eukaryotes)
define budding
a type of asexual reproduction,
outgrowth from parent detaches, forms new individual
(ejemplo - cnidarians)
define gemmulation
a type of asexual reproduction,
aggregation of cells protected by gemmule capsule, becomes new individual
(ejemplo - sponges)
define fragmentation
a type of asexual reproduction,
animal breaks into two or more parts, fragments become new individual
(ejemplo - anemones)
egg and sperm cells are called _______ cells
germ
all cells in the body, excluding egg and sperm cells, are referred to as ________ cells
somatic,
somatic cells are diploid, meaning they contain two sets of chromosomes, one inherited from each parent.
gametes are formed by ______ and ______ cells
sperm and egg,
supplied by two different individuals
what is the first somatic also referred to as
a zygote (fertilized egg)
gametes (_________) united via fertilization, forms zygote (_______)
haploid - having a single set of unpaired chromosomes
diploid - having two sets of chromosomes, one from each parents
zygote develops into new individual who has genetic material from ___________________________
both contributing parents
