reproduction Flashcards
during what period is an egg released from an ovary and passes into a fallopian tube
ovulation
as sperm leave a testis, they are stored and mature in a tube called an
epididymis
reproduction that does not involve the union of sex cells and in which a single parent produces offspring that are genetically identical to the parent
asexual reproduction
three types of asexual reproduction
budding
fragmentation
regeneration
what forms when an egg’s nucleus and a sperm’s nucleus join
a fertilized egg
asexual reproduction where parts of an organism break off and then develop into a new individual that is identical to the original one
fragmentation
asexual reproduction when an organism loses a body part, that part may develop into an entirely new organism
regeneration
mammals that give birth to partially developed live young
marsupials
reproduction in which sec cells from two parents unite to produce offspring that share traits from both parents
sexual reproduction
male sex cells
sperm
what is another name for a fertilized egg
zygote
female sex cells
eggs
the joining of egg and sperm
fertilization
the division of one cell that had 46 cells each into four cells that have 23 chromosomes each
meiosis
how many chromosomes are in a sex cell
23
mammals that are nourished inside their mothers bodies before birth
placental mammals
fertilization of an egg by sperm that occurs inside the body of a female
internal fertilization
mammals that lay eggs
monotremes
asexual reproduction where a part of the parent organism punches off and forms a new organism
budding
male sex hormone
testosterone
this hormone regulates the production of sperm and the development of male characteristics
testosterone
another tube passes from the epididymis into the body and through the prostate gland
vas deferens
the union of sex cells outside the bodies of the parents
external fertilization
this gland surrounds the neck of the bladder in males
prostate gland