meiosis vocab Flashcards
meiosis
Chromosome
structure made up of DNA and proteins; carry genetic information
sex chromosome
a chromosome that determines the persons sex
autosome
any chromosome that is not a sex chromosome
unreplicated chromosome
a chromosome that consist of one double helical molecule of dna with proteins
replicated chromosome
a chromosome that after DNA replication that consist of two identical chromatids that each have a double helical molecule of dna
sister chromatid
two identical chromatids in a replicated chromosome
homologous chromosome (homologs)
chromosomes that have the same genes and the same shape and size
non-sister chromatids
chromatids attached to different homolog chromosome pairs.
bivalent
paired replicated homologous chromosomes that exist during metaphase I and prophase I
Haploid number
total number of different types of chromosomes in a cell; n
diploid number
number of chromosomes in diploid cells (2n)
ploidy
the number of each type of chromosomes
haploid
having one of each type of chromosome
diploid
have two of each type of chromosome
polyploid
having more than two types of each chromosomes. tetraploid, hexaploid.