Science Chapter 4 Woodland

Created by peacegirl268 

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17 terms

growth/development and cell divison

the two parts of the cell cycle

Mitosis

when the nucleus divides to form two identical nuclei

steps of mitosis

interphase, prophase, metaphase, anaphase, telophase

asexual reproduction

a new organism is produced from one organism

fission, budding, and regeneration

can also be used for asexual reproduction

zygote

cell formed in fertilization

meiosis

occurs in reproductive organs, producing four haploid cells

in meiosis

four new sex cells are produced

meiosis ensures

offspring produced by fertilization have the same number of chromosomes as their parents

DNA

large molecules made up of two twisted strands of sugar-phosphate molecules and nitrogen bases

gene

the section of DNA on a chromsome that directs the makeing of a specific protein

RNA

when DNA copys itself and is the pattern of blank

types of RNA/ used to make proteins

messenger, ribosomal, and transfer

mutations

permanent changes in DNA while in the process

diploid

when cells have similar chromosomes

chromosome

a structure in the nucleus that contains heredity material

fertilization

the joining of the egg and sperm

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