The correct answer is option B, that is, Genetic drift greatly affects small populations, but large populations can recover.
Genetic drift in combination with mutation, natural selection, and migration is one of the most fundamental mechanisms of evolution. Genetic drift refers to a change in the relative frequency of distinct genotypes in a small populace, owing to the chance vanishing of specific genes as individuals do not reproduce or die.
Answer: Helicase
Explanation: Replication is a process of making two identical copies of DNA from a double-stranded DNA. This process is catalyzed by an enzyme called DNA polymerase. Before DNA polymerase begins the synthesis of the new strands, helicase will unwind or unzip the double-stranded DNA. Helicase is the enzyme that unzips or unwinds the double-stranded DNA helix during replication. Helicase separates the two strands by moving along the DNA using chemical energy from ATP. The separated strands serve as templates for the synthesis of new DNA strand.
Answer:
a chemical reaction mass is neither created nor destroyed
Explanation:
a chemical reaction mass is neither created nor destroyed
206 bones because at birth when you have 270 they fuse together over time
The different DNA sequence for a gene shows that same character can be expressed in 2 or more forms. Alleles are present on homologous chromosome.
Explanation:
The gene is the DNA sequences on the chromosome coding for the particular trait in an organism.
The alleles are the variant of the gene. In a homologous chromosome the variant of the gene or allele is present. The homologous chromosome is present in progeny one from each parent.
For example the allele for tall as homozygous is present on one of the parent and shortness on the other parent in homologous chromosome. The trait of height is the gene and the way it expresses itself is the trait from either parent. The DNA sequence will also be different for the alleles because they will code for different proteins like short or tall phenotype.
The genotype will be different hence DNA sequence is also changed.
