Name that Word
a molecule that contains an organism’s genetic information
deoxyribonucleic acid (DNA)
Fill in the blank: If a _________ allele is present, then that is the form of gene that is expressed as the trait.
dominant
What does "feature" mean?
a structure, characteristic, or behavior of an organism, such as eye color, plant height, or timing of migration
What is homozygous?
a gene composed of two identical alleles
the first organism from the past that is related to all the organisms in the group
most recent common ancestor
the traits produced by the genotype; the expression of genes
phenotype
Descendants of a common ancestor may show similar ______________________ that were passed on from that ancestor.
inherited characteristic
What does "population" mean?
all the individuals of one kind in a specified area at one time
what is variation?
the range of expression of a trait within a population
the offspring of the parent generation
F1 generation (first filial)
a structure, characteristic, or behavior of an organism, such as eye color, plant height, or timing of migration
feature
Located in the chromosomes, this basic unit of heredity codes for proteins which determine an organism's traits. One _______ codes for one protein.
gene
what does "P generation (parent)" mean?
the first generation in a group of organisms that are being studied
What is recessive?
a form of a gene that is expressed only when a dominant allele is not present
the offspring of the F1 generation
F2 generation (second filial)
the passing of traits from parent to offspring
heredity
When offspring are the same age of descent from a common ancestor, they are in the same __________.
generation
What does "genome" mean?
an organism’s complete set of DNA
What is filial?
related to sons and daughters
belonging to the same group or family; connected by common ancestry
related
variations of genes that determine traits in organisms; these exist at corresponding locations on paired chromosomes.
allele
DNA gets coiled into a ___________ so that hereditary information can be transferred to the next generation
chromosome
What does "genotype" mean?
an organism’s particular genetic makeup
What is a cladogram?
an evolutionary tree diagram based on shared characteristics
an organism related to an organism that lived earlier
descendant