4A Flashcards
____ are found inside the nucleus
chromosomes
____ and ____ are multi folded
DNA and Proteins
Prokaryotes’ DNA are found in ____
nucleoid region
Eukaryotes’ chromosomes are visible during ____
cell division
At the beginning of mitosis chromosomes are seen to consist of ____
two threads (sister chromatids)
Daughter chromatids are bound at the ____
centromere
____ at ends of chromosomes are TTAGGG sequence
Telomeres
____ is where microtubules attach during mitosis
Kinetochore
Telomere shortening is important in ____
aging
Four Chromosome structures
Metacentric, Submetacentric, Acrocentric, Telocentric
A specific region of the eukaryotic chromosomes where kinetochore is found
centromere
Cell Division- phase where organisms copy their chromosomes and grow to mature size
interphase
Cell Division- nucleus divides, distributing the chromosomes into two equal groups
mitosis
Cytoplasm divides each part taking a nucleus
cytokinesis
No. of Hours in cell division
5, 7, 3, 1 respectively
Results in the production of two daughter cells
mitosis
Result in the production of germ (sex) cells
meiosis
Crossing over results in enormous ___ amongst the sex cells.
variation
Substages of prophase 1
Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis
Homogametic sex chromosomes
XX
Heterogametic sex chromosomes
XY
