So, lets say that the letter representing freckles is F for dominant or f for recessive
Clearly, the mother is F, while the father is f. which most likely gives the girls the genotype of Ff with one dominant freckle allele each which means they display the trait.
During DNA replication, the hydrogen bonds must be broken between the complementary nitrogenous bases in the DNA double helix
Answer: Chlorine-36 (^36Cl) is an isotope of chlorine.
Explanation: Chlorine has two stable isotopes and one naturally occurring radioactive isotope, the cosmogenic isotope ^36Cl.
Answer:
1. Mutation
2. Epigenetics
Explanation:
1. Mutation occurs when there is a change in an organism's DNA sequence as a result of mistakes in DNA replication or as a result of environmental factors like smoking. The mutation in a single organism can be passed on to other generations hence causing a genetic variation in the population, this obeys the Darwin's law that inherited traits (genetic) are passed on to other generations
2. Epigenetics are changes in gene expression that doesn't involve changes in the DNA sequences unlike mutation. This changes can be passed on to other generations and hence cause a variation in the population. This obeys the Lamarckian evolution that acquired traits are passed on to other generations.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.