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Chapter 6.1
vocab
13
Science
10th Grade
02/08/2008

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Term

gametes

Definition

an organism's reproductive cells, such as sperm or egg cells.

Term
binary fission
Definition
a form of asexual reproduction that produces identical offspring
Term
gene
Definition
a segment of DNA that codes for a protein of RNA molecule
Term
chromatids
Definition
two exact copies of DNA that make up each chromosome
Term
chromosome
Definition
as a eukaryotic cell prepares to divide, the DNA and the proteins associated with the DNA coil into a structure
Term
centromere
Definition

when two chromatids of a chromosome are attached at a point

Term
homologous chromosomes
Definition
chromosomes that are similar to size, shape, and genetic content
Term
diploid
Definition

when a cell, such as a somatic cell, contains two sets of chromosomes

Term
haploid
Definition
when a cell ontains one set of chromosomes, like a gamete.
Term
zygote
Definition
a fertilized egg cell, the first of a new individual
Term
autosomes
Definition
chromosomes that are not directly involved in determining the sex (gender) of an individual
Term
sex chromosomes
Definition
one of 23 pairs of chromosomes in humans, contain genes that will determine the sex of an individual.
Term
karyotype
Definition
a photo of the chromosomes in a dividing cell that shows the chromosomes arranged by size.
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