Levels of Organization
What are tissues?
groups of cells working together to perform a specific job
the building blocks of nucleic acids are known as
Nucleotides
What is The scientific study of heredity?
Genetics
Occurs when more than one individual or population tries to make use of the same resource.
competition
phase before mitosis; growth of cell and preparation for division
interphase
What are some different types of tissues?
Muscle -- soft tissue making up muscles
Connective -- connects, supports organs
Epithelial -- skin
Nerve-- main part of the nervous system
The acronym DNA stands for
Deoxyribonucleic acid
What is specific physical characteristic that varies from one individual to another?
Trait
what is a mutation?
Change in an organism that occurs when DNA is damaged or changed.
prophase is what?
chromatin condenses into chromosomes, nuclear envelope disappears, spindle fibers start to form
What are organs?
Groups of tissues working together to perform a certain job
DNA makes up chromosomes, which are located in the
Nucleus
What is section of DNA that codes for a specific trait?
Gene
what is natural selection?
The process by which organisms best adapted to their environment survive & reproduce to pass on favorable traits to their offspring.
the sister chromatids seperate into individual chromosomes and are moved apart during what?
anaphase
What are examples of some organs?
HEART, LUNGS, STOMACH, BRAIN
The sugar found in DNA is
Deoxyribose sugar
a genotype with two different alleles.
hybrid
Intentional mating of two animals to produce offspring with desirable characteristics or for the elimination of a trait.
selective breeding
metaphase is what?
chromosomes, chromosomes line up in the middle of the cell
This is the highest level of organization.
Organism
a DNA molecule consists of
2 strands
different forms of a gene
allele
survival of the fittest is what?
Organisms that are best adapted to their environment have a better chance of surviving and reproducing to pass on their genes.
chromosomes return to chromatin; nuclear membranes form; cleavage furrow begins during what phase?
telophase