Sexual Reproductiob Flashcards
Fusion of two gametes to produce a single zygote.
Sexual Reproduction
Fusion of ——— gametes to produce a ——— zygote.
two
single
Introduces greater genetic variation, allows genetic recombination.
Sexual reproduction
With exception of self-fertilizing organisms, zygote has gametes from two different parents.
Sexual reproduction
At fertilization, 23 chromosomes are donated by each parent.
(total = 46 or 23 pairs).
Sexual reproduction
At fertilization, ——— chromosomes are donated by each parent.
23
Contain 22 autosomes and 1 sex
chromosome.
Gametes (sperm/ova)
Are haploid (haploid number
“n” = 23 in humans).
Gametes (sperm/ova)
Fertilization results in diploid zygote.
–Diploid cell; 2n = 46. (n = 23 in humans)
Sexual reproduction
Diploid cell; 2n = 46. (n = 23 in humans)
Fertilization results in diploid zygote.
Only gametes are produced through meiosis.
Sexual reproduction
Only gametes are produced through ———
meiosis