Answer:
A DNA marker
Explanation:
also known as a size standard or a DNA ladder) is loaded into the first well of the gel. The fragments in the marker are of a known length so can be used to help approximate the size of the fragments in the samples.
Answer: 50% Tt, 25% short, 75% tall
Explanation: Tt x Tt —> TT tt Tt tT possible
proportions by genotype TT 25% Tt 50% tt 25%
T dominant so
proportions by phenotype tall (TT, Tt) 75% short (tt) 25%
Answer:
The answer is a codon. A codon is in a mRNA while an anti-codon is in a tRNA.
The accurate answer is:
Natural selection is based on Darwin’s observation that individuals most likely to survive and reproduce are those _____.Environment