Day 2 Flashcards
1
Q
Nondisjunction
A
Failure of a pair of homologous chromosomes to split at meiosis
2
Q
Monosomy
A
No chromosomes go to one daughter cell during meiosis, only X from sperm, results in Turner’s syndrome
3
Q
Trisomy
A
Both chromosomes go to one daughter cell, sperm adds chromosome so ends with 3 chromosomes, down syndrome
4
Q
Spermatogenesis
A
Mature sperm cells are produced, symmetrical division, continuous
5
Q
Components of a mature sperm
A
- head
- neck
- tail
- acrosome
6
Q
Acrosome
A
Contains enzymes which allow sperm to penetrate oocyte
7
Q
Oogenesis
A
Process where mature oocytes are produced (begins before birth)
8
Q
Corona radiata
A
External layer surrounding oocyte
9
Q
Zona pellucida
A
Internal layer surrounding oocyte
