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46 Cards in this Set

  • Front
  • Back

Why don't cyanobacteria and bacteria reproduce by mitosis?

they do not contain chromosomes

damaged cells of an organism are usually _______ by mitosis

replaced

matched pairs of chromosomes are called

homologous

all the chromosomes in a diploid cell are paired t/f

true

how many chromosomes are produced by the first division of meiosis

double the original

each chromosome usually contains _____ gene for a particular ______

one, trait

the proteins which are required to reproduce DNA during interphase are:

enzymes

during a mutation, there's a mistake in the dna _______, and a __________ in the chromosomes



ladder, copy error

phase during mitosis when dna separates into pairs of chromosomes is:

prophase

forms the pole of the spindle apparatus

centriole

membrane that surrounds the nucleus of the cell

nuclear envelope

having chromosomes which occur singly, not in matched sets or pairs

haploid

matched units of dna containing genetic information

homologous chromosomes

produces daughter cells with less chromosomes than the parent cell

meiosis

a system of fibers which go from one end of the cell to the other

spindle apparatus

period of mitosis in which chromosomes move to opposite ends of the pole

anaphase

method of cytokinesis in animals

furrowing

threadlike substance in nucleus that carries genetic information

chromatin

period when the cell is not engaged in division

interphase

chromatin or chromosomes are duplicated during:

s phase

cells that don't divide during mitosis

gamete, bacterial cell

nuclear envelope disintegrates during

prophase

cell plate is formed during _______

telophase

sperm cells are produced by ______

meiosis

chromosomes separate and move in different directions during:

anaphase

type of cell division associated with the increase in size in weight

mitosis

chromosomes are attached to the _________ during the metaphase of mitosis

spindle fibers

two basic functions of meiosis

maintain chromosome numbers through generations, produce new types of organisms

an adventitious bud would be formed on a :

root

what organism produces conidia

fungi

successful breeding is limited to the gametes of the same created "kinds" of organisms t/f

true

condition common to protozoa where the cell acts as the gamete

isogamy

gametangia are produced by gametes t/f

false

eggs are motile t/f

false

oogamy always involves fertilization from gametes of differing sizes t/f

true

a zygote develops into a(n) _______ during early stages

embryo

meiosis occurs shortly after fertilization

haplontic life cycle

meiosis produces eggs and sperm

diplontic life cycle

organisms having a haplontic life cycle would probably be

isogamous

humans have a ________ life cycle

diplontic

spores produced by the male cone of a pine tree are produced by

meiosis

haploid generation

gametophyte

a group of fern sporangia

sorus

develops into a fruit; develops into a seed

ovary; ovule

gameto. and sporo. appear to be the same

isomorphic alterations of generations

stamen is made up of the ______ and ______

filament, anther