What molecules form the double layer of cell membranes? options:

phospholipids
polysaccharide

2. if someone had the list of traits you provided in question 1, do you think he or she would be able to find you in a group of 1000 people? why or why not? if not, what other information encoded in your genes might distinguish you from the others in the group? what are other traits that are encoded for by dna?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human