LIVING ENVIRONMENT: asexual & sexual reproduction Flashcards
1 parent/1 set of DNA/identical offspring
asexual parents
mitosis
a type of cell division in whcih the nucleus divides and the genetic material is equally divided
chromosones
made of DNA humans have 46
the cell cycle
a series of evemts that cells go through as they grow and divide
interphase
grow and prepare for cell division living and growing
chromatin
threadlike substances that will become chromosomes
prophase
the chromatin condesnses into the chromosones
metaphase
meta (middle) chromosones line up in the center of the cell
anaphase
the sisters chromatin are pulled apart into individual chromosomes
telephase
the chromosones gather at opposite ends of the cell, new set of chromosones will form
cytopkinesis
when cytoplasm and cell membrane pinch in half to create two new cells
plant cells do not have _____
centrioles
cancer
uncontrolled celll division (mitosis)
______ will grow due to cells contiuing to divide even without space
tumors
2 parents/two sets of DNA/23 chromosomes from each parent
sexual reproduction
testes
male reproduction organ that produces the hormone testosterone and sperm
vas deference
tube that carries sperm will not be transported from your body
prostate
produce fluid from sperm
urethra
connected to vas deference and takes sperm through penis
ovary
female reproductive organ that produces hormones and eggs
oviduct
(fallopian tube) tube that carries eggs where fertilization occurs
uterus
site where embryo implants and develops
cervix
outer end of the uterus
vagina
birth canal that leads to the outside of the body
menstrul cycle
a cycle of ovulation implantation then shedding of the unterine line
stages involved w menstrual cycle
folice stage –> ovulation –> curpus lutem –> menstrution
meiosis
is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information
haploid
half the # of chromosomes
diploid
a condition where a nucleus contains the full amount of chromosomes
homologus
same
homologous chromosomes
a pair of chromosomes that have the same gene during meiosis, this is called crossing over
by the chromosomes crossing over the chromosomes swap increasing_____
genetic variation
gametogenesis
proccess of making gametes (sex cells)
spermatogenesis
making sperm
oogenesis
making eggs
fertilization
the proccess of a sperm joining an egg occurs in the OVIDUCT (fallopian tube) of the female
embryo
CLEVAGE –> GASTRULATION –> GROWTH & DIFFERENCIATION
clevage
a series of mitiosis divisions
differentiation
cells of the developing zygote become different cells from the body cells using mitosis to become different body cells
amneotic sad/fluid
provides protection and coshing
placenta
provides nutrients and gas exchange for the fetus
unbilical birth
attaches baby to placenta
zygote
a diploid cell resulting from the fusion of two haploid gametes
sperm
Sperm is the male reproductive cell, or gamete, in forms of sexual reproduction
Eggs
are made in the ovaries
The differences between mitosis and meiosis
Mitosis is where the genetic material is equally divided into two new daughter cells where meiosis is where a single cell divides twice two produce 4 cells containing half the original amount of genetic info
What the resulting cell of fertilization is called.
This is called the zygote
Where fertilization occurs and what happens during the process.
Fertlllzation occurs in the fallopian tube, this is when the egg and sperm join together
The major events that occur during the menstrual cycle.
Folice stage – ovulation — corpus lutem — mestration
What would happen if the fallopian tubes or vas deferens were blocked?
The sperm would not be able to get through so the egg wouldnt be able to be fertlilized
