Chapter 13: Meiosis Flashcards
Gametes
Sex cells
23 chromosomes
Locus
location of a gene on a chromosome
Gene
smallest unit of heredity
Asexual reproduction
Multicellular organisms can do it! 😱
Life cycle
A generation to generation sequence of stages in the reproductive history of an organism
Karyotype
An ordered display of chromosomes from a cell
The two chromosomes composing a chromosome pair
Have equal lengths
Homologous chromosomes/homologs
Chromosome pair with same length, centromere position, and staining pattern
Meiosis
cell division for sex cells/gametes
Produces clones
Fertilization
Union of two haploid cells
Clone
Genetically identical individuals from the same parent
Mitosis produces clones
Meiosis II
Does not have a prometaphase
Allele
Different versions of the same gene
Mechanisms for genetic shuffling
- Independent assortment
- crossing over
- random fertilization
Recombinant chromosomes
combined DNA from each parent
Synaptomeal Complex
holds homologs together tightly (like and ice cream sandwich)