0:03 let's look at reproduction in parasites
0:06 specifically the malaria parasite
0:08 the parasites that cause malaria
0:10 reproduce differently in different
0:14 stages of their life cycle
0:16 malarial parasites spend part of their
0:18 life cycle in the body of a female
0:21 mosquito and part of their life cycle in
0:24 the blood and organs of human beings
0:27 both sexual and asexual reproduction are
0:29 part of the life cycle of the malaria parasite
0:31 parasite
0:33 asexual reproduction
0:35 is not an alternative if conditions are bad
0:37 bad
0:40 it is actually part of the life cycle of
0:41 the parasite
0:43 when the mosquito takes her blood meal
0:45 and bites the human
0:47 the drop in temperature between the
0:50 human body and the mosquito triggers
0:52 sexual reproduction in some of the
0:58 there there's a 20-minute window when
1:06 it bursts out of the blood cells
1:11 and then the sexual forms meet
1:14 they form zygotes with two n chromosomes
1:17 deployed zygotes and then these zygotes
1:20 undergo meiosis to produce new asexual parasites
1:22 parasites
1:25 and when this mosquito goes to bite
1:27 another human and take their blood
1:34 will infect the new host the new human host
1:35 host
1:39 and spend their asexual lives have an
1:41 asexual life cycle in
1:41 in
1:43 the cells of
1:45 the blood the red blood cells
1:47 specifically of the new host as well as
1:53 and parasites show a lot of variation
1:55 because they have
1:57 a sexual part of their life cycle
