In prophase I, as homologous chromosomes pair up gene by gene, when homologous portions of two nonsister chromatids trade places. Resulting in recombinant chromosomes.
What is Crossing over
200
Image of ordered pairs of chromosomes
What is Karyotypes
200
When does crossing over take place
What is Prophase I
200
The ability for any sperm to fuse with any ovum. This mechanism helps in increasing genetic diversity.
What is Random Fertilitzation
300
How many genetically unique haploid cells are there
What is 4
300
What is happening in Meiosis II
What is Seperation of sister chromatids
300
This product of genetic variation is a key factor in natural selection.
What is Recombination
400
Diploid cells have how many copies of DNA
What is 2
400
Sister chromatids seperate and go to opposite poles in what phase
What is Anaphase II
400
These are the 3 mechanisms of genetic variation
What is crossing over, independent assortment of chromosomes, and random fertilization.
500
What are the three different sexual life cycles
What are Animals, Plants and some algae, most fungi and protists
500
Pairs of homologous chromosomes arrange where
What is Metaphase plate
500
one aspect of sexual reproduction that generates genetic variation