Mutation/Cancer
Which chromosome abnormality causes Down Syndrome?
Chromosome 21
What is the first phase of the cell cycle?
Interphase
A DNA molecule is a polymer made of what?
nucleotides
Egg and sperm cells have half the number of chromosomes as their parent cells
T/F
True
Character
what is the spread of cancer cells from their site of origin to other sites of the body?
metastasis
During mitosis chromosomes are distributed to how many offspring nuclei?
two
The DNA of every eukaryotic is stored in what?
Nucleas
What allows sexual reproduction to occur generation after generation?
Meiosis
Most human genes come in alternate versions called what?
Alleles
a gene that causes a cell to become cancerous is called a what?
oncogene
What must the chromosomes be before mitosis?
Duplicated
what is the molecule of heredity?
DNA
from one diploid cell how many haploids are produced during meiosis?
four
Trait
a normal gene that, if mutated, can lead to cancer is called a what?
proto-oncogene
what is the extra function of mitosis?
generate more cells
Protein and DNA formed together to create what?
Chromatin
In humans, meiosis produces cells that are called what?
gametes
The physical traits of an organism are called it's what?
Phenotype
A (what?) is an abnormally growing mass of cells that is actively spreading throughout the body
malignant tumor
chromosomes line up in the center of the cell during which phase of mitosis?
Metaphase
What technique would you use to make more copies of a molecule?
PCR
nondisjunction
If an organism has two non-identical versions of a gene, the one that is expressed in the organism is called the (what?) allele.
Dominant