Explore tens of thousands of sets crafted by our community.
Meiosis and Genetic Variation
20
Flashcards
0/20
Crossing Over in Prophase I
Recombination of genetic material between non-sister chromatids of homologous chromosomes.
Genetic Recombination in Metaphase I
Aligned recombinant chromosomes can randomly assort to promote variation.
Nondisjunction Events
Atypical separation of chromosomes can lead to genetic diversity, potentially causing disorders.
Centromere Orientation in Metaphase II
Unique orientation can lead to different combinations of chromosomes in daughter cells.
Meiotic Drive
Biased segregation of alleles that can increase the frequency of a particular allele in a population.
Synapsis Formation in Prophase I
Pairing of homologous chromosomes, allowing crossing over and genetic recombination.
Reduction Division in Meiosis I
Halves the number of chromosomes, producing haploid cells from diploid cells.
Segregation of alleles in Anaphase I
Separation of homologous chromosomes, leading to each gamete receiving a different set of alleles.
Zygotic Chromosome Combinations
The unique combination of chromosomes from each parent promotes genetic diversity.
Chiasma Formation
Physical manifestation of crossing over in Prophase I, facilitates the exchange of genetic material.
Sister Chromatid Cohesion Release in Anaphase II
Allows sister chromatids to separate and enhances genetic variation if crossing over has occurred.
Gene Conversion during Crossing Over
Nonreciprocal genetic exchange that can produce new allele combinations.
DNA Replication occurs before Meiosis I
Creates two copies of each chromosome, setting the stage for crossing over and segregation.
Independent Assortment in Metaphase I
Random orientation of homologous chromosome pairs at the metaphase plate.
Random Fertilization
Union of two gametes from different parents produces a unique combination of alleles.
Telomere Shortening
Can result in variation of chromosomal stability and potentially contribute to aging and disease.
Mitochondrial DNA Segregation
Mitochondria are inherited maternally, and any variation contributes to genetic diversity.
Chromosome Length Variability
Variation in length can result from events like crossing over, affecting inheritance and gene expression.
Translocation of Chromosome Segments
Exchange of DNA between nonhomologous chromosomes can create new gene linkages.
Mismatch Repair During Meiosis
Post-replicative mismatch repair mechanisms can increase genetic diversity by creating new alleles.
© Hypatia.Tech. 2024 All rights reserved.