Biology-Reproduction Notes(green notes)

A type of reproduction that requires only one parent to reproduce

asexual reproduction

Asexual cell division in bacteria is called:

Binary fission

How does binary fission reproduce?

they duplicate their DNA and they divide into two

What budding?

new organisms develop from a bud on the parent organism

Organism that is cut in half and each half grows another end

fragmentation

All cells come from what?

preexisting cells

Cell division that produces clone cells

mitosis

Why do cells divide and stay small?

to maintain homeostasis

What are diploid cells?

cells that have two sets of chromosomes (one from each parent)

Are body cells diploid or haploid?

diploids

The longest stage of the cell cycle is:

interphase

Define mitosis

division of the nucleus

Photosynthesis organelle

coraplast

Where does DNA replication occur during interphase?

s phase

The division of cytoplasm

cytokinesis

Mitosis results in cells that are:

diploids

Regeneration in starfish is an example of:

mitosis

Uncontrolled division:

cancer

How many chromosomes does humans have?

46

Offspring are a:

combination of both parents

Each parent contributes how many chromosomes?

23

What is meiosis?

the process that produces gametes (sex cells)

Interphase must happen:

before meiosis begins

What benefit does asexual reproduction have over sexual reproduction?

it’s faster

For us gametes are the:

sperm cell and egg cell

What does it mean by the offspring are "unique" organisms?

They are genetically different from each other and from their parents

What is one disadvantage of sexual reproduction?

It is more time consuming than asexual reproduction

Mitosis is important because:

helps make new cells and it can repair damaged cells

Mitosis is where the cell:

prepares to divide

Interphase is where the cell:

grows

Failure of chromosomes to separate in meiosis:

nondisjunction

Mitosis makes (2/4) cells that are:

diploid

If the sperm of a hamster has 12 chromosomes how many are in its muscle cells?

24

Meiosis makes (2/4) cells that are (diploid/haploid)

haploid

Male gamete + female gamete=

zygote

If a skin cell of a species has 20 chromosomes, how many in a sperm cell

10