They observed in the offspring bacteria that there was the presence of marked DNA after crossing.
<h3>What is DNA?</h3>
This is referred to as deoxyribonucleic acid and contains the genetic instruction in organisms.
Hershey and Chase experiment involved using bacteriophages to infect a bacteria in which the DNA entered with little or no protein. The presence of marked DNA in the bacteria means it is the biomolecule involved in reproduction.
Read more about DNA here brainly.com/question/16099437
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<h3>
Answer: B) Centromere</h3>
I recommend looking at the wikipedia page for Chromatid. They show a diagram where the centromere is, which is basically where the chromosomes glue together more or less.
Amino Acids. A polypeptide IS a protein.
Answer:
<h2> 50%</h2>
Explanation:
A Purple, long tailed lizard crossed with a white, no tailed lizard.
As given,
In F1 all lizards are purple with a short tail.
PPLL ( purple, long tailed lizard)
gametes are PL, PL.
ppll( white, no tailed lizard)
gametes are pl, pl
F1 : PpLl ( purple with a short tail)
Here, it indicate that tail size follows law of incomplete dominance
Gametes are PL, Pl, pL, pl
Cross between two F1's
PpLl× PpLl
Punnet square is:
PL Pl pL pl
PL PPLL, PPLl PpLL PpLl
Pl PPLl PPll PpLl Ppll
pL PpLL PpLl ppLL ppLl
pl PpLl Ppll ppLl ppll
So, there are 50% short tailed. ( __Ll)