which of these nitrogenous base compositions in dna describe chargaffs rules? select all that apply. the dna…

which of these nitrogenous base compositions in dna describe chargaffs rules? select all that apply. the dna of all members of a species has the same nitrogenous base composition. the percentage of a is always almost equal to the percentage of t, and the percentage of g is always almost equal to the percentage of c. the percentage of a is always almost equal to the percentage of g, and the percentage of t is always almost equal to the percentage of c. for every adenine in a double - stranded dna molecule, there has to be exactly one thymine.

which of these nitrogenous base compositions in dna describe chargaffs rules? select all that apply. the dna of all members of a species has the same nitrogenous base composition. the percentage of a is always almost equal to the percentage of t, and the percentage of g is always almost equal to the percentage of c. the percentage of a is always almost equal to the percentage of g, and the percentage of t is always almost equal to the percentage of c. for every adenine in a double - stranded dna molecule, there has to be exactly one thymine.

Answer

Answer:

  • B. The percentage of A is always almost equal to the percentage of T, and the percentage of G is always almost equal to the percentage of C.
  • D. For every adenine in a double - stranded DNA molecule, there has to be exactly one thymine.

Brief Explanations:

Las reglas de Chargaff establecen que en el ADN doblemente enlazado, la cantidad de adenina (A) es igual a la de timina (T), y la cantidad de guanina (G) es igual a la de citosina (C). Esto se debe a que A se empareja con T a través de dos enlaces de hidrógeno y G se empareja con C a través de tres enlaces de hidrógeno. La primera opción se refiere a la homogeneidad de la composición de bases nitrogenadas dentro de una especie, pero no es una regla de Chargaff propiamente dicha, y la tercera opción no es correcta ya que A no se empareja con G y T no se empareja con C.