IQ1 - Reproduction Flashcards
asexual reproduction
the process of forming a genetically identical organism from one parent through cell division
sexual reproduction
the process of forming a new organism from the fusion of the parent gametes
eukaryotic cells
multicellular organisms; nucleus and membrane-bound organelles
prokaryotic cells
unicellular organisms; no nucleus or membrane bound organelles
somatic cells
body cells
homologous pairs
chromosome pairs that each carry the same gene in the same location (humans = 23 homologous pairs)
haploid
number of homologous pairs (n)
diploid
number of chromosomes (2n)
spores
unicellular reproductive structures that can disperse, germinate and grow into a new organism
clone
identical offspring from a parent
binary fission
cell division resulting in a parent cell becoming two identical offspring cells
budding
uneven cell division or outgrowth
gametes
the sex cells produced in sexual reproduction; carry half the genetic material of offspring
fertilisation
union of male and female gametes
zygote
a fertilised egg; first cell of offspring
embryo
an early stage in development of offspring
internal fertilisation
union of male and female gametes within the female body
external fertilisation
union of male and female gametes after their release outside of the body (aquatic)
pollination
process where male gamete (pollen) is carried from the stamen of a flower to the stigma of another
germination
the process of a seed growing into a new plant