1. How many dominant alleles does an individual need in order to have the autosomal dominant trait? 2. Is it possible to know the genotypes of the three children in generation III? Should their shapes be shaded? Explain your answer to both questions.

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes