Term
|
Definition
The CONTROL is the part of the experiment in which the conditions are kept constant. An unchanging variable in an experiment.
|
|
|
Term
|
Definition
A HYPOTHESIS? is a possible answer to a scientific question. |
|
|
Term
|
Definition
A cell that only contains one set of chromosomes. Meiosis produces haploid cells. Human sperm cells,
egg cells. contains only one set of chromosomes
Haploid = 1n
|
|
|
Term
|
Definition
-Division of the nucleus
-Process by which cells make a duplicate set of chromosomes
Cell division has 2 parts:
Division of nucleus (M Phase)
Division of Cytoplasm. |
|
|
Term
|
Definition
During meiosis
the random distribution of genes from different chromosomes to the gametes.
(pg. 154) |
|
|
Term
|
Definition
| First Stage of interphase Offspring cells grow to mature size (cell growth) |
|
|
Term
|
Definition
3rd Stage of interphase.
Cell prepares for cell division. |
|
|
Term
|
Definition
Meiosis only takes place in testes & ovaries
It is the process by which sperm and eggs are formed with 1/2 the number # of chromosomes |
|
|
Term
|
Definition
* 2nd stage of interphase.
-Cell DNA is copied. |
|
|
Term
|
Definition
Producing offspring from ONE parent.
Does not usually involve meiosis or union of gametes:
**** Genetically identical to parent. |
|
|
Term
|
Definition
Producing offspring
[Through meiosis and the union of sperm & egg]
with combination of genetic material from 2 parent organisms. (pg. 156) |
|
|
Term
|
Definition
1n + 1n=2n
2n=diploid
a cell that contains both chromosomes of homologous pair.
-cells that have 2 SETS of chromosomes all normal human cells (except reproductive cells) |
|
|
Term
|
Definition
division of prokaryotic cell (lacks a nucleus and membrane bound organelle)
into 2 offspring cells:
1) prokaryotic cell
2)copied
3) cell begins to divide
4)2 identical haploid cells |
|
|
Term
|
Definition
| 3rd phase of mitosis in which chromosomes separate at the centromere and slowly move centromere first toward opposite poles of dividing cell. |
|
|
Term
|
Definition
4th Final phase of MITOSIS
chromosomes lengthen chromosomes reach opposite poles of the cell and the cytoplasm begins to divide. |
|
|
Term
|
Definition
|
|
Term
| What are the phases of the cell cycle? Describe each . |
|
Definition
-G cell growth
- S DNA replication
-G2 preparation for cell division |
|
|
Term
|
Definition
chromosomes in body cells
44- are autosomes 2 are sex chromosomes
A chromosome that is not a SEX chromosome is a autosome. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| crossing over is a way that chromosomes randomly mix up genetic traits. |
|
|
Term
|
Definition
The division of the cytoplasm of the cell.
Cyto= Cytoplasm
|
|
|
