You analyze a dna sample and find that its base composition is 30% a, 20% t, 30% g, and 20% c. what can you conclude about the structure of this dna?
because a equals g, and t equals c, this must be a double-stranded dna molecule.
because a does not equal t, and g does not equal c, this cannot be a double-stranded dna molecule. it must therefore be a single-stranded dna.
because a is half as much again as t, and g is half as much again as c, this must be a mutated double-stranded dna molecule.
there is not enough information to determine whether it is a single-stranded or a double-stranded dna molecule.

Because A does not equal T, and G does not equal C, this cannot be a double-stranded DNA molecule. It must therefore be a single-stranded DNA.

Explanation:

The base composition in the observed DNA sample does not follow the Chargaff rule. If it was a double-stranded DNA, the percent proportion of adenine base and thymine base should be equal (either 30% or 20% for both). Similarly, the percent proportion of guanine and cytosine bases must also be equal  (either 30% or 20% for both). Since the given sample does not follow it, it is not a double-stranded DNA molecule but is present as a single strand.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )