chromosome become clearly visible and nuclear membrane disappears.
What is prophase
100
Monk that like pea plants and gave us an understanding of heredity
Who is Gregor Mendel
100
gametes are produced during this cell division process or cycle
What is meiosis
100
These attach to the centromeres and pull apart sister chromatids
What are spindle fibers
100
cells take energy from the sun (light) and transfer it into food with the use of chloroplasts
What is photosynthesis
200
cells spend most of their time in this phase, it is a time of growth and metabolism
What is Interphase
200
when one allele masks the characteristics of the other allele for a given trait
What is dominant
200
Crossing over occurs during this phase. Homologous chromosomes exchange pieces of their DNA.
What is Prophase I
200
during prophase the structure breaks down, disappears before chromosomes move apart.
What is the nuclear membrane
200
A tentative statement based on observations, statement used to explain a natural phenomenon.
What is a hypothesis
300
two new daughter cells form when the cytoplasm divides
What is cytokinesis
300
When the alleles (genes) are the same for a given trait.
What is homozygous
300
If an organism has 46 total chromosomes, at the end of meiosis, each cell will have......
What is 23
300
in this phase the chromosomes line up in center of the cell
What is metaphase
300
The variable that we change during an experiment.
What is the independent variable.
400
chromosome number in a cell that has a pair of each type of chromosome characteristic for a given species (2n)
What is diploid
400
the end product of meiosis
What are 4 haploid gametes
400
name three things that form during mitosis cell cycle
(what types of cells and tissue)
What is hair, skin, blood cells
400
This type of cell lacks a nucleus
What is a prokaryote.
500
temporary array of microtubules that form during mitosis or meiosis and that are involved in the moving of chromatids to opposite sides of a cell
What are spindle fibers
500
Two heterozygous tall plants (Tt) are crossed producing some offspring that are tall and some that are short.
What is the ratio of the tall offspring to short offspring?
What is 3:1 ratio
500
cells that have only one of each type of chromosome characteristic of a given species (n)
What is haploid
500
during this phase, sister chromatids are pulled apart and pulled to opposite sides of the cell
What is anaphase
500
the cell membrane can stop some substances from crossing and yet allow others to cross it at certain times.