Reproduction Flashcards
This is the process a cell uses to make a copy of its DNA
DNA Replication
When does the process of DNA replication start and end?
It starts immediately BEFORE a cell divides. It ends when each chromosome is duplicated. each copy having identical DNA
What is the 1st stage of DNA Replication?
DNA unzips along the middle to expose the sequence of bases
What is the 2nd stage of DNA Replication?
The two strands of unpaired bases act as a template for new bases to be attached
What is the 3rd stage of DNA Replication?
New bases (attached to a sugar and phosphate) match up to the exposed bases of each strand
What is the 4th stage of DNA Replication?
There are now 2 DNA molecules
What is an error in duplicating the base sequence called?
Mutation
Each of the two threads of duplicated DNA
Chromatid
The point where the two chromatids are joined together.
centromere
A type of cell division that produces unique gametes (sperm/egg) used in sexual reproduction.
Meiosis
How many chromosomes are produced during the process of Meiosis?
Half the number of chromosomes (23 for humans)
involves individuals passing on their genetic material to the next generation.
Reproduction
Sexual or Asexual Reproduction:
requires only one parent
Asexual Reproduction
Sexual or Asexual Reproduction:
Offspring is identical to the parents (clone)
Asexual Reproduction
Sexual or Asexual Reproduction:
No new allele combination is introduced to the population (Therefore, No variation)
Asexual Reproduction
