The karyotype for trisomy 21 illustrates an example of a genetic mutation caused by

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Name the organs of humanelemintary canal.

Ecology can best be described as the study of what