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ANSC 221-Exam 4
Genetics lectures
21
Biology
Undergraduate 2
12/01/2012

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Term
Chromosome Features
Definition
contains genes, dna, proteins
Term
What does DNA provide to a Chromosome?
Definition
genetic material
Term
What do proteins provide for a Chromosome?
Definition
organized structure.
Term
In chromosome what is the DNA protein called?
Definition
chromatin
Term
Field of genetics that involves microscopic examination of chromosomes
Definition
cytogenetics
Term
Animal cell types
Definition
Somatic & Germ Cells
Term
Somatic cells are
Definition
Body cells not gametes
Term
Germ cells are
Definition
Gametes
Term
Gametes
Definition
Sperm and Egg Cells
Term
karyotype
Definition
organized representation of the chromosome within the cell
Term
most eukaryotic species are Diploid/Haploid
Definition
Diploid (2n)
Term
Humans diploid number
Definition
46 (23n)
Term
Dogs diploid number
Definition
78 (39n)
Term
Fruit Fly diploid number
Definition
8 (4n)
Term
Cattle diploid number
Definition
60 (30n)
Term
homologs
Definition
members of a pair of chromosomes
Term
homologous pair
Definition
formed by 2 homologs
Term
The two chromosomes in a homologous pair are identical

True/False
Definition
FALSE: same genes not same alleles (usually 1% difference)
Term
sex chromosomes are not homologous
Definition
differ in size and genetic composition, pseudoautosomal regions
Term
locus
Definition
location of gene on a chromosome
Term
purpose of cellular division
Definition
asexual reproduction
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