3. In humans, free-ear lobes are dominant to attached. Two parented that are both
heterozygous free are expecting a child. What are the chances that the child will
have free ear lobes of attached?
Key:
Genotype:
Phenotype:

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

b. to discover aspects of the natural world.

hopefully i .

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: