Sexual reproduction

Sexual Reproduction

is the fusion of male and female gamete during fertilisation to produce non identical offspring

Gametes in mammals

sperm and eggs cells

Gametes in plants

pollen and ova

Diploid cells (nerve cells and muscle cells)

Contain 46 chromosomes

Haploid Cells (gametes and sex cells)

contain 23 chromosomes

what happens when a sperm and egg cell fuse during fertilisation

a zygote is formed

Secondary sexual characteristics

are the changes that occur during puberty as children become adolescents

Sexual characteristics (male)

develop sperm, voice deepens, growth spurt, body hair develops

Sexual Characteristics (female)

periods start, body hair develops, breast develop, hips widen

Sexual Characteristics (both)

Body odour, interest in sex. growth spurt, voice changes

ovary

makes eggs

cervix

a ring of muscle that holds the baby in place

vagina

receive sperm

urethra

carries urine

oviduct

carries eggs to the uterus, cilia help move the egg

uterus

where the baby grows, strong, muscular walls and thick lining