BIOL 1201 Chapter : 14 Mendel And The Gene Idea 2
Document Summary
Interphase: majority of time dedicated to this phase. Interphase makes up about 90% of cell cycle. Includes: sensing the environment, acquisition of nutrients, growth, high metabolic activity, chromosomes/organelles duplicate, 3 sub-phases, g1, s, g2. Interphase g1 phase: period before dna replication, cell, grows in size, differentiates to perform specific function, receives internal and external signals to decide if it should divide. If positive, then enters s sub-phase to continue cell division: no turning back at this point. If negative, then revert back to undifferentiated state: prevents too much cell division from happening. Immune system will ill mutated cells if given chance. Inheritance: when traits are passed down from parent to offspring. Each trait is determined by pairs of alleles: one allele from each parent, 2. ) Allele pairs separate during meiosis: law of segregation states that allele pairs segregate during gamete formation (meiosis), and the paired condition is restored by random fusion of gametes during fertilization, 4. )
