<span>Thymine is harder to make, but more stable. DNA needs to keep information safe for a long time, so it makes sense to use thymine. But RNA is made and used quickly, and small mistakes don’t matter as much, so the easier to make uracil does the job.</span>
Answer:
The correct answer would be D) tt.
Recessive traits need a homozygous condition to get expressed and to produce a particular phenotype. In contrast, dominant trait can be expressed in homozygous as well as heterozygous condition of the alleles of a gene.
Now, shortness is a recessive trait encoded by allele "t". Hence, allele "t" must be present in the homozygous condition in order to make the plant short.
Thus, the genotype of all the short plants in the field should be tt and the genotype of the tall plants would be TT or Tt.
C. this individual is a male since he has X and Y chromosomes
Just to add on over time they have develiped a tuff outer layer to stop weather and insects from harming them.
Answer:
C
Explanation:
the pressure on the inner core is greater than the pressure on the outer core and the melting point of iron, the main constituent of the core, increases as soon as the pressure goes up
