Answer:
Cell, nucleus, chromosome, gene
The question is about a test cross. Definition of a test cross: Generally a cross involving a homozygous recessive individual. When a single trait is being studies, a test cross is a cross between an individual with the dominant phenotype but of unknown genotype (homozygous or heterozygous) with a homozygous recessive individual. If the unknown is heterozygous, then approximately 50% of the offspring should display the recessive phenotype. If the individual is homozygous all the progeny will have the dominant phenotype. James' suggestion to use show the result of the two possible crosses with a Punnet square is a great suggestion.
Answer:
Atomic theory is the scientific theory that matter is composed of particles called atoms.
Solids: their molecules are close to each other.They can't change their shape nor they can does it expand to fill the entire available volume like gas.
Liquid: A liquid is an incompressible fluid that conforms to the shape of the container in which it is stored. It's molecules are not too close to each other.
Gas: Most gases cannot be seen but are present in the atmosphere.Their particles are far from each other.Gas is described by pressure, volume, temperature and number of particles
Explanation:
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Answer:
two domains is the answer
