All of these are connected to biology.
Given the correct forms for the bases, Watson was able to figure out how adenine-thymine and guanine-cytosine pairs matched up, and formed weak hydrogen bonds with one another. Watson and Crick originally suggested that there were two bonds between guanine and cytosine but later it was found that a third existed.
Add starch indicator solution to the water in the beaker. If the indicator solution changes color than starch is present.
Unit cell: The simplest arrangement of atoms or molecules that regularly repeat in a crystal structure
Crystal lattice: A crystal lattice is a three dimensional atomic structure for the solid phase of matter.
Characteristics of a crystal lattice include
Symmetrical and infinitely repeating arrangement of atoms
hope this helps
The best answer would be C. If freckles is dominant then we can eliminate answer choice D because that is recessive. We can eliminate answer choice A because that isn't even a genotype. We can eliminate answer choice B because the father doesn't have a dominant F only recessive f's. This means that the father cannot give a F, only f's.
