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Biology

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In an experiment, meat was placed in an open container and a sealed container. Maggots formed only on the meat in the open container. What does this prove?
T or F: natural selection and artificial selection follow the same principles
Galapagos finches are split into many different species, but they resemble each other with respect to their characteristic traits. What concept explains this?
Darwin and Wallace read Malthus' work and realized that natural selection could result from ____________
the physical appearance of a trait in a individual is the _____ , although in some cases traits are not easily observed
organisms that can synthesize organic nutrients which other organisms can consume are called
which of the following are classified as human sex chromosomes?
true or false: a male receives all of his X-linked alleles from his father
Select all the photosynthetic organisms- plants- fungi- cyanobacteria- algae- animals
tertiary consumers can also be called top
an organism that requires only inorganic nutrients and an outside energy source to produce its own organic nutrients is called a producer or an
also called a consumer an organism that cannot produce its own organic nutrients is called an
Biotic components of an ecosystem are considered autotrophs and heterotrophs depending on
Most of the organic nutrients used by all organisms are produced by
select the following ways that inorganic nutrients are made available to producers
a heterotroph that feeds directly on plants and algae is called an
the gene responsible for determining male gender is located on
Because the allele for red-green color blindness is carried on the X chromosome and is recessive, the disorder is much more common in
If a male exhibits a sex-linked trait, the allele for the trait came from the mother and resides on the
an organism with a _______ genotype carries two identical alleles for a given gene

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