To exhibit a recessive trait, an individual must have two recessive alleles responsible for the trait. One recessive allele is from a mother and another is from a father. However, if a person has one dominant and one recessive allele, it will not exhibit the recessive trait. This is because recessive allele will be masked by the dominant allele. So, parents must be heterozygous (one dominant and one recessive allele) and must give their recessive alleles to the offspring so that only offspring exhibit the recessive trait.
The correct answer is .....D
Answer: D
Explanation:
Could RNA have provided a template for DNA assembly, thereby enabling a more stable molecule that is replicated more accurately?
B the origin of new matter in the steady state theory???
Answer:
Input ingredients = water, carbon dioxide, energy from the sun
Output ingredients = glucose, oxygen
Explanation:
Photosynthesis involves the production of carbohydrates from inorganic products. The chemical equation for the process is represented below:

Water and carbon dioxide molecules combine in the presence of sunlight radiation to give glucose and oxygen molecules.
Input ingredients = water, carbon dioxide, sunlight
Output ingredients = glucose, oxygen