Word bank: phenotype, genotype, heterozygous, homozygous, traits,
alleles, genes

Chromosomes contain , which help to determine an
organism’s . Genes come in alternate forms called
, and both parents may not have the same type of
allele. The actual gene combination that an organism
receives from its parents is called its , while the trait
that gets expressed as a result is referred to as its . If
an offspring receives the same type of allele for a given
gene from each parent, it is said to be for that trait.
If the alleles differ, it is .

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano