XX=female chromosome XY= male
Answer:
the left one where the dna is labeled in the center with the wacky string
Answer:
Number of protons
Explanation:
A is false because an atom can have a varying number of electrons and still be the same element, just a different isotope of the element
B is false because the charge of the atom only comes into play when two or more atoms are interacting
C is false bc... well. Hydrogen is literally an element.
D is false because the number of outer shell electrons (valence electrons) just determines what group (or column) the element is in on the periodic table
Question - In a paternity testing case, a child's DNA was collected to see if it matched both parents' DNA. Which type of genetic material can be used for the DNA fingerprinting?
Answer - gel electrophoresis
Why - It is used to "separate molecules/DNA according to their size and electrical charge using an electric current passed through a gel containing the samples".