Which of the following describes the molecular structure of a dna molecule?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

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