nebular hypothesis
The most widely accepted theory of planetary formation, known as the nebular hypothesis, maintains that 4.6 billion years ago, the Solar System formed from the gravitational collapse of a giant molecular cloud which was light years across. Several stars, including the Sun, formed within the collapsing cloud.
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.
The correct answer from the choices listed above is option A. Adaptations took advantage of the presence of free oxygen in the oceans and atmosphere by the <span>evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.</span>
Answer:
<em>Atomic hydrogen efficiently scatters ultraviolet radiation emitted by the Sun, and the amount of scattered light sensitively depends on the amount of H atoms that are present in the atmosphere.</em>
Answer:
B The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells
Explanation:
hope this helps sorry if incorrect have a good rest of your day :) ❤
