Human Traits
Effects of Environment on Plant Life
Traits Leading to Successful Reproduction
Making Dog and Bacteria Family
Variation in Elephants
100
A segment of DNA on a chromosome that codes for a specific trait
gene
100
A logical statement about what will happen if the hypothesis is correct.
prediction
100
scattering of seeds; can be done by animals, insects, air, or water
seed dispersal
100
Different forms of a gene as shown here...
allele
100
A group of organisms that are closely related and can mate to produce fertile offspring
species
200
these all show different _______ in bean pods
trait
200
As a class, we all decided to use the same ______ so that all the data could be compared.
units
200
The meeting of the sperm (part of the pollen) and egg (in the overy)
fertilization
200
The number of chromosomes a human has
23
200
The process in which genetic material is passed from parents to their offspring.
inheritence
300
an idea that recurs in or provides a work of art or literature
theme
300
factors that influence the functioning of an organism but are not consumed or used up by the organism
environmental conditions
300
Female guppies prefer certain male traits that will elp their offspring survive and reproduce, but their choice can depend on wheter a ________ is around.
predator
300
single-celled organisms that lack a nucleus; prokaryotes
bacteria
300
A change or slight difference in condition, amount, or level.
variation
400
Describes a trait that covers over, or dominates, another form of that trait (A).
dominant
400
In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment. 
control group
400
The transfer of pollen usually from one flower to another
pollination
400
A threadlike, gene-carrying structure found in the nucleus.
chromosome
400
The scientific study of heredity
genetics
500
Trait of an organism that can be masked by the dominant form of a trait (a).
recessive
500
A factor that can change in an experiment
variable
500
The generation-to-generation sequence of stages in the reproductive history of an organism.
life cycle
500
This part of the cell contains DNA instructions
nucleus
500
This includes the place one lives, the plants and animals around, the weather and climate, air quality, food consumed, and so much more.
environment