sexual and reproduction and meiosis/ asexual reproduction test

in___ a new organism grows on the body of its parent by mitosis and cell division

buding

If a zygote has too many or too few ______ , It will not develop properly.

chromosomes

because all of a clone's what come from what parent, the clone is genetic copy of its parents.

chromosomes

Meiosis forms sex cells with the correct haploid number of _____. This maintains the correct _____ number of chromosomes in organisms when sex cells join.

chromosomes, joint

what are body cells, meaning they have what

diploid, pairs of chromosomes

Another disadvantage is that searching for a mate takes time and energy and might expose individuals to predators, ____, or harsh environmental conditions.

diseases

what is the female sex cell and where does it form

egg, ovary

genetic varioation gives individuals within a population slight differences that might be an advantage if the what changes

enviornment

Many unicellular ____ reproduce by mitotic cell division. IN this type of asexual reproduction, an organism forms two offspring through mitosis and _____.

eukaryotes, cell division

during what process do an egg and sperm join together

fertilization

cell division in prokaryotes us known as what

fission

what are sex cells, meaning that have what

haploid, one one chromosome from each pair of chromosomes

what are pairs of chromosomes that have genes for the same traits arranged in the same order

homologous chromosomes

Because the offspring of asexual reproduction inherit all their DNA from one parent, they are genetically ______ to each other and their parent.

identical

when the bud becomes what, it can break form the parent and live on its own.

large enough

asexual reproduction enables organisms to reproduce without an_____

mate

during what, a reproductive and its nucleus divide twice and produces four cells- two pairs of identical haploid cells.

meiosis

in what does one diploid cell divide and makes four haploid cells.

meiosis

during what and what, a body cell and its nucleus divide once and produce two identical cells

mitosis

genetic changes, called what can occur and then be passed to offspring ; this can affect the offspring's ability to survive

mutations

after meiosis 1 the two cells formed during that stage go through a second division of the what and cytoplasm called meiosis II.

nucleus

meiosis involves two divisions of the whan and the what

nucleus and the cytoplasm

different organisms have different what of chromosomes

numbers

asexual reproduction also enables some organisms t rapidly produce a large number of______

offspring

sexual reproduction produces what that have a new combination of DNA

offspring

What is asexual reproduction?

one parent oraganism produces offspring without meiosis and fetilization

asexual reproduction produces offspring that are genetically identical to each other and to their what. This results in minimal genetic what within a population

parent,variation

what occurs when an offspring grows from a piece of its parent

regeneration

sea stars, sea urchins, sea cucumbers, and planarians can what through regeneration

reproduce

during meiosis II blank blank seperate to produce four haploid cells.

sister cells

what is the male sex cell and where does it form

sperm, testis

Using a cloning method called ____, plant growers and scientists can use a meristem to make a copy of a plant with desirable traits.

tissue culture

Many animals can _____ damaged or lost body parts. This is not reproduction; _____ are not produced.

regenerate, new individuals

what breeding has been used to develop desirable traits in plants and animals

selective

during meiosis 1 each pair of duplicated homologous chromosomes what

seperate

one disadvantage of sexual reproduction is that organisms have to grow and develop until they are mature enough to produce what cells

sex

genetic variation is important because it can give organisms a better chance of what if the enviornmnet changes.

surviving

organisms that reproduce sexually make what two kinds of cells

body and sex cells

what is a type of asexual reproduction developed by scientists and performed in laboratories. It produces what individuals from a cell or form a cluster of cells taken from a multicellular organism

cloning, identical

During fission, DNA is ____ and the cell splits to form two identical offspring. The original cell no longer exists.

copied

during what does the reproductive cell grow and duplicate its chromosomes

interphase

this results in genetic what among individuals.

variation

what is the new cell that forms

zygote

What is sexual reproduction?

Sexual reproduction produces an offspring when genetic materials from two different sex cells combine.