Which of the following is true of a parasitic relationship?
Responses:
The parasite benefits, and the host is harmed; however, the host is not generally killed.
The parasite benefits, and the host is killed.
The parasite benefits for a time; however, both the parasite and the host eventually die as a result of the relationship.
The host benefits from the relationship, and the parasite is harmed.
The parasite benefits, and the host is harmed; however, the host is not generally killed.
An organism that contains two different alleles for a trait is said to be ______ for that trait.
recessive
heterozygous
dominant
homozygous
heterozygous
which of the following is true about genes?
genes are responsible for all the traits of an organism
in humans, genes are passed to an offspring from two parents
Genes are made up of smaller molecules known as chromosomes.
The genes of a particular organism can never change throughout its lifetime.
in humans, genes are passed to an offspring from two parents
Sexual reproduction produces offspring that are genetically _______ to the parents.
identical
unrelated
similar
opposite
Sexual reproduction produces offspring that are genetically similar to the parents.
_______ provide evidence that living things evolved from earlier species.
historical fictions
religions
fossils
videos of dinosaurs
fossils
Evolution is a
a. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
b. prediction because it makes an educated guess about events that will occur in the future
c. variable because it is a factor that can be changed during experimentation.
d. law because it has been proven without exception under certain stated conditions.