Unit 6 & 7 Study Guide Flashcards
Prophase
1) Chromosome duplicated
2) the centrioles move to the opposite sides of cells
3) spindle forms
4) nuclear envelop breaks down
Mitosis
is the phase of the cell cycle where cell division occurs
Metaphase
1) chromosomes line up across the middle of the cell
Anaphase
1) centromeres are pulled apart and the chromatids separate to become individual chromosomes
2) the chromosomes separate into two groups near the poles of the cell
Interphase
Is the time between cell divisions; it consists of the G1, S, and G2 phases
Stages of Mitosis in order:
- Prophase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
Cytokinesis
Is the final step in cell division, and completely separates the two daughters from each other
Apoptosis
A process of programmed to cell death
Cancer
a disorder in which body cells lose the ability to control cell growth
Genetics
the scientific study of heredity
Alleles
are different forms of a gene
Dominant (R)
if 1 parent has a dominant allele, the offspring will exhibit that trait
Recessive (r)
both parents need a recessive allele for the offspring to exhibit the trait
Gametes
are sex cells, XX (female) and XY (male), the first X comes from mom, & second X or Y comes from dad
Hybrid
changing the offspring by breeding plants with different characteristics
Genes
contain characteristics passed from parent to offspring
Heredity
the delivery of genes from parent to offspring
Law of Segregation
the separation of alleles during gamete formation
Law of Independent Assortment
when more than one gene is involved, the alleles will separate independently producing offspring that can have characteristics different from the parent
Asexual Reproduction
the production of genetically identical offspring from a single parent
Sexual reproduction
Offspring produced by inheriting genetic information from two parents
Genotype
The genetic makeup of an organism or group of organisms with reference to a single trait, set of traits or, an entire complex of traits
Heterozygous
different
Homozygous
Same