animaal reproduction biology chapter 4

simpler animals reproduce?

asexualy

asexual rep

a single parents offspring that look allmost exactly as the parents

types of asexual reproduction

1 budding

2 fragmentation

3 regeneration

Most organisms produce 

sexualy

sexualy rep

Offsprings are formed when genetic information is passed down from more than 1 parent

a fertilized egg is called?

a zygote

wich cells donot have 46 chromosomes

sex cells and matured red blood cels

sex cells are made from a proces called? and how many new cells does it get ?

miosis . 4 new cels and each have 23 chromosoms

genetic information is found on ………. and genes are located on ………. and they are made from the cells……

genes and they are located on the chromosomes . dna

where are the genes located?

they are located inside the dna on the chromosomes

where does the external fertiilization must ocur

in a moist enviroment

in internal fertilization give e,x and say a fact about them

mammals reptiles birds and some fish and the fact is some internall fertilizers lay fertilized eggs

mammals

all mammals produce sexualy and all mamals norture ther eyoung ones with milk

how many days does it take for the embyro to go through the falopian tube to the uterus?

5-6 days

during what days does the implantation ocure?

11 and 12 days

when does umbilical crd form?

in week 5

when do doctors measure and count the days of the pregnancy?

they count the days from the first menstrul

what do testes do?

relugate sperm production

and help withj male charastristics

where do sperms mature?

in the epidimies

the prostate gland sourounds the neck of?

the bladder

the main female hormones are called

estrogen and progestrone

where does most fertilizations ocure?

in the falopian tube

when does mentralization end?

late 50 60ss

how many days does the menstrulization go for? and how many days are between menstrulization

14 days ovalation goes for and it takles anbout 28 days for mentralization to go again

the unrare twins are? how many births are there in 1k and how many are alike”?

3 aferternal twins there are 30 twins 1 thirds are alike

cancveer for men

cacer for women

for men testes and prostated gland

for women cervix and breast cancer

how many ooovaarriiess aaarree ttheerre?

2

hooww mmany weekks does iit taakke fforr a fffrrog to haatch??

2

hhe patitiis is aa wwhaaat deaaasiis?

liveeer 140k eaach year