Answer:
Steven has heterozygous genotype.
Explanation:
Tongue rolling is a dominant trait, that means the trait can express itself at the homozygous dominant and as well as in the heterozygous condition. The recessive homozygous condition is not able to express this trait.
Steven can roll his trait, this means his genotype is either homozygous dominant or heterozygous. The wife is recessive for the trait. Their son cannot roll his tongue, this means the Steven is heterozygous dominant. If the Steven is homozygous dominant his son will be able to express the trait.
Thus, the answer is Steven has heterozygous genotype.
The Richter scale is used to measure the amount of seismic energy released by an earthquake.
A and C are the same and thus both wrong. B. The higher the temperature, the more molecules start moving, the more space inbetween them and thus the larger.
Answer:
Gene are a segment of DNA that codes for specific proteins. The chromosome is where the gene is stored or contained.
Explanation: You can look it p on google to understand better
Answer:
They have a long fiber so they can carry messages up and down the body over long distances. In a stimulated neuron, an electrical nerve impulse passes along the axon. The axon is insulated by a fatty sheath - the fatty sheath increases the speed of the nerve impulses along the neuron.
Explanation: