Ch. 11 Chromosomes
first ____ ____ of homologous chromosomes are called ____ or ____ chromosomes
22 pairs, autosomes, autosomal
the ___ ___ of chromosomes determines the sex of the individual and are called ____ ____
23rd pair, sex chromosomes
Humans have ___ chromosomes or ____ ____
46, 23 pairs
an average person has ____ - ____ unique mutations
50 - 200
sex chromosomes for a female are ____
XX
sex chromosomes for a male are ____
XY
body chromosomes or non sex chromosomes are _____
autosomes
chromosomes are only packed tightly when a ____ is ____
cell, reproducing
a chromosome is an entire ____ of ____ with stabalizing proteins
chain, DNA
mutations are ____ that happen to ____
changes, DNA
when a cell divides sister _____ separate and 1 goes to each new cell
chromatids
double, coiled short DNA in a dividing cell is called ______ consisting of two parts called ______ + ______
chromosome, chromatid, centromere
two sets of chromosomes is a _____which are found in ____ - ____ cells or ____
diploid, non sex, autosomes
Dna changes from chromatin to chromosome for a more _____ division
efficent
one member of each pair of chromosomes comes from ____ and one from ____
father, mother
a zygote always has a full or _____ number of chromosomes usually a ____ egg cell (____ + ____)
fertilized, sperm + egg
_____ is the ____ ____ or the sperm or egg
gamete, sex cells
a human genome is an entire collection of ____ that make us who ____ ____
genes, we are
_____ (__) contains ____ ____ of chromosomes
haploid, n, 23 pairs
stabilizing proteins in a chromosome are called ____
histones
____ chromosomes contain the _____ ____ of genetic info, one coming from ____ parent, one from ____ parent
homologous, same type, male, female
when chromosomes are arranged in homologous pairs they are arranged in a _____
karyotype
Dna is located in ______ and controls all cell _____ including cell division
nucleus, activities
information obtained from a karyotype is: ____ of chromosomes, ____ chromosome content, ____ or ____ of invidual chromosomes, nature and extent of large structural ____
number, sex, presence, absence, abnormalities
XX or XY that determines the sex of the offspring is the _____ _____
sex chromosomes
2 identical _____ ____ attatched at an area in the middle called a _____
sister chromatids, centromere
each human body cell ( ____ ____ ) contains ____ chromosomes or ____ pairs of chromosomes
somatic cell, 46, 23
all ____ (_____) cells in an organism have the same kind and number of chromosomes
somatic, body
every organism has a _____ number of chromosomes
specific
long and _____ - _____ DNA in a _____ - _____ cell is called _____
thread like, non dividing, chromatin
mating of gametes forms a ____
zygote
