gametes
Haploid reproductive cells
Gametes are reproductive cells that fuse during sexual reproduction—sperm in males, eggs in females.
Each gamete carries half the genetic information needed to form a new organism.
When two gametes combine at fertilization, they create a cell with a complete set of chromosomes: The sperm and egg are gametes that unite to form a zygote.
Male reproductive cell
- eggReproductive cell in shell
- ovumFemale reproductive cell
- ovaFemale reproductive cells
- oocyteUndeveloped female gamete
germ cells · haploid · nucleus · cytoplasm · membrane · flagellum · cell division · chromatin
DNA strand carrying genes
- haploidSingle chromosome complement
- diploidTwo complete chromosome sets
- alleleGene variant at one locus
- DNAHereditary code molecule
gene · recombination · segregation · crossing over · heredity · inheritance · genotype · karyotype
Male gamete formation
- oogenesisFemale reproductive cell development
- meiosisGamete-producing cell division
- maturationProcess of becoming complete
- gonadGamete-producing organ
First embryonic cell
- conceptionFormation of an idea
- fusionJoining into unity
- inseminationIntroducing sperm for conception
- pollinationFlower reproductive transfer
spawning · cross-fertilization · self-fertilization · cortical reaction · embryo · implantation · blastocyst
Floral reproductive grains
- sporeAsexual reproductive cell
- ovuleUnfertilized seed structure
- pollen tubeGrowth carrying sperm to ovule
- zygosporeSpore from fused cells
Two-parent genetic combination
- outcrossingBreeding unrelated same-species individuals
- genetic variationInherited molecular differences
- polymorphismMany forms, one interface
- recombinationGenetic material exchange process
mate selection · reproductive strategy · dimorphism · hybridization
sperm
Male reproductive cell
oocyte · germ cells · haploid · nucleus · cytoplasm · membrane · flagellum · cell division · chromatin · organelles
chromosome
DNA strand carrying genes
- haploidSingle chromosome complement
- diploidTwo complete chromosome sets
- alleleGene variant at one locus
DNA · gene · recombination · segregation · crossing over · heredity · inheritance · genotype · karyotype · homologous
spermatogenesis
Male gamete formation
- oogenesisFemale reproductive cell development
- meiosisGamete-producing cell division
- maturationProcess of becoming complete
zygote
First embryonic cell
- conceptionFormation of an idea
- fusionJoining into unity
- inseminationIntroducing sperm for conception
pollination · spawning · cross-fertilization · self-fertilization · cortical reaction · embryo · implantation · blastocyst
pollen
Floral reproductive grains
- sporeAsexual reproductive cell
- ovuleUnfertilized seed structure
- pollen tubeGrowth carrying sperm to ovule
sexual reproduction
Two-parent genetic combination
- outcrossingBreeding unrelated same-species individuals
- genetic variationInherited molecular differences
- polymorphismMany forms, one interface
recombination · mate selection · reproductive strategy · dimorphism · hybridization
- reproductionreproduction, birth, baby, egg, sperm
- geneticsDNA, allele, genotype, genes, gene
- reproductive anatomypenis, vagina, testes, testicles, ovaries
- spawningspawning, spawning season, spawning ground, spawning grounds, fish spawning
- biospecimensblood samples, tissue samples, DNA samples, saliva samples, biological samples
- germplasmgermplasm, seed banks, gene pools, genetic material, seeds
gametesstem cells
Undifferentiated cells with regenerative potential
- unreduced gametesReproductive cells without meiotic halving