BIO 351 PRACTICE EXAM 1

BIO 351 PRACTICE EXAM 1


Chromosome types - ANSWER metacentric, acrocentric, telocentric


Metacentric chromosome - ANSWER centromere in the middle


Acrocentric chromosome - ANSWER centromere close to the end


Telocentric chromosome - ANSWER centromere at telomere


Karyotype - ANSWER drawing/photo of chromosomes in a cell
Usually during cell division
usually stained


What do Karyotypes tell us? - ANSWER number of chromosomes in a species
(invariant)
2 types of eukaryotic cells (haploid/diploid)


Haploid (n) - ANSWER one copy of each chromosome


Diploid (2n) - ANSWER two copies of each chromosome


Haploid cell - ANSWER


Diploid cell - ANSWER

, Asexual reproduction - ANSWER mitosis


Mitosis - ANSWER occurs in reproduction of simple organisms
growth and tissue maintenance


Stages of mitosis - ANSWER interphase, prophase, metaphase, anaphase,
telophase


Interphase (mitosis) - ANSWER cell grows, chromosomes replicate


Prophase (mitosis) - ANSWER chromosomes condense


Metaphase (mitosis) - ANSWER chromosomes line up at equator of cell


Anaphase (mitosis) - ANSWER sister chromatids separate to opposite ends of
cell


Telophase & Citokenesis (mitosis) - ANSWER cell divides


meiosis - ANSWER a reduction division that results in the formation of 4
haploid gametes from a diploid cell (reduction division)


Steps of Meiosis - ANSWER Interphase, Prophase 1, Metaphase 1, Anaphase
1, Telophase 1, Prophase 2, Metaphase 2, Anaphase 2, Telophase 2