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Flashcards in Asexual Reproduction Deck (24):
0

How many chromosomes do humans have in each cell?

46

1

How many pairs of chromosomes do humans have in each cell?

23 pairs

2

What is the name for chromosomes that have gene codes for a trait but have different variations of that trait?

homologous chromosomes

3

What are the phases a cell goes through during its life?

interphase, prophase, metaphase, anaphase, telophase

4

the cell cycle

sequence of growth and division in a cell

5

interphase

the first phase of cell division. DNA replicates itself and forms a sister chromatid for each chromosome.

6

mitosis

a period of nuclear cell division, two daughter cells are formed ( each contains a full set of chromosomes ) , identical to parent cells (clone)

7

prophase

chromosomes become visible, nuclear envelope disintegrates, centrioles migrate to opposite poles, spindle fibers form between centrioles

8

metaphase

chromosomes become attached to spindle fibers by the centromeres, chromosomes line up in the middle

9

centromeres

the protein connecting the sister chromatids together

10

anaphase

sister chromatids separate, spindle fibers shorten and pull one of the double chromosomes to a pole

11

telophase

chromatids reach opposite ends of the poles, two nuclear membranes form, chromosomes unwind and loose their shape

12

When does a cell carry out metabolism?

interphase

13

cytokinesis

the cell pinches together and 2 cells are formed

14

What organelle do animals have that plants do not?

centrioles

15

In a plant cell, the cell can not go through cytokinesis because of the cell wall. What forms across the middle of a cell?

cell plate

16

When do our cells divide?

growth, repair, development and maintenance

17

asexual reproduction

also uses mitosis, new cells are identical, offspring are clones of parents, no variation unless a mutation occurs

18

binary fission

nuclear material and cytoplasm of a cell divide equally
ex bacteria and ameba

19

budding (unicellular)

cytoplasm divides unequally to create a smaller bud
ex yeast

20

budding (multicellular)

outgrowth from the body of a parent that develops into a completely different organism, may detach or remain attached

21

Equatorial plate

The middle of a animal cell

22

Sporulation

Specialized cells are released by parents enclosed in protective capsules develop into new individual when environment is good (dandelion)

23

Regeneration

Development of lost parts or growth of an entire organism from part of original organism (worm starfish)