Meiosis
How many pairs of chromosomes in human somatic cells.
23
The joining of gamates is called...
fertilization
Where the ovum is formed.
ovary
Fertilized egg
zygote
a procedure that help infertile couples have children?
IVF/ in vitro fertilization
The term used to describe a cell which has half the number of chromosomes of a parent and the other term to describe a cell which has a complete set of chromosomes.
haploid and diploid
This is the most important characteristic of sexual reproduction.
offspring are genetically different from their parent and from each other
Where the male gametes are formed.
testicles
The first 8 weeks of development in human, the growing individual is referred to as
an embryo
where do the sperm cells mature?
epididymis
what do you call a chromosome that has the genes on one chromosome that corresponds to the genes on the other chromosome.
Homologous chromosome
One event that happens when in prophase 1 that creates variation.
crossing over
The process where sperm cells meet the egg cell inside a female
internal fertilization
where does fertilization occur in humans
fallopian tube/ oviduct
is development internal or external in frog?
external
How many cells are produced in Mitosis and Meiosis?
specify which one is which
4 daughter cells in meiosis and two in mitosis
Name a disadvantage of sexual reproduction.
any 1 of :
it needs a mate
fewer offspring
it require time and energy
The process of sperm and egg cell uniting outside of the body is known as....
external fertilization
what is warm blooded?
an organism that has a constant body temperature regardless of environment temperature
where are spores produces in a fungi
sporangia
This is the process at the end stage in cell divisions when the cell cytoplasm is constricting ready to split into 2
Cytokinesis
Name an advantage of asexual reproduction.
any 1 of:
more offspring
less energy
genetically identical offspring.
Give an example of a species that does external fertilization.
Fish, sea urchins, frogs.
another term to describe an organ that produces gametes
gonad
a way organisms can reproduce asexually
binary fission/ budding/ spore formation/