Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
what is the middle of the choromosme called?
|
the centromere
|
|
|
what are the two types of choromosomes?
|
sex chromosomes and autosomes
|
|
|
what are females chromosomes and what are male choromosomes?
|
female- xx
male- xy |
|
|
how many chromosomes do humans have?
|
46, 2- sex 44- autosomes (22 pairs)
|
|
|
all cells are derived from---
|
the division of preexisting cells
|
|
|
what are the 2 kinds of cell division in eukaryotic cells?
|
1. mitosis
2. meiosis |
|
|
what are the steps of interphase?
|
G1 phase- cell growth
S phase- DNA is copied G2 phase- growth & prep. for cell divison |
|
|
what are the two stages of cell division?
|
m phase- the nucleus divides
cytokenesis- the cytoplasm divides |
|
|
what are mitotic spindle made up of?
|
kinetochore fibers and polar fibers
|
|
|
what are the 4 stages of mitosis and meiosis?
|
prophase, metaphase, anaphase, telophase
|
|
|
what does meiosis form?
|
SPERM cells
|
|
|
how doess each spermatid mature into a sperm cell?
|
through spermatogenesis
|
|
|
what is oogenesis?
|
the production of mature egg cells
|
|
|
what is asexual reproduction?
|
the production of off-spring from only one parent and does not invovle the union of gametes
|
|
|
what is sexual reproductino?
|
the proudction of off-spring through meiosis and the union of gametes
|
