Chapter 13 - Sexual Life Cycles and Meiosis Flashcards
1
Q
Character
A
visible and inherited features
- determined by gene
e. g. blood type
2
Q
Trait
A
alternate versions of a character
-determined by allele
A, B, AB, O
3
Q
Karyotype
A
-during metaphase
4
Q
gonosome
A
sex determining chromosomes (X and Y)
c.f. autosomes
5
Q
Reductional division
A
2n => n
Meiosis I => Cytokinesis I
6
Q
Equational division
A
n => n
Meiosis II => Cytokinesis II
7
Q
Synapsis
A
physical pairing of duplicated homologous chromosomes by the synaptonemal complex
-only occurs during Prophase I
8
Q
Synaptonemal complex
A
zipper-like protein structure that tightly connects homologous chromosomes
-needed during synapsis (Prophase I)
