Answer: Mutation. The allelic variations that make evolution possible are generated by the process of mutation, but new mutations change gene frequencies very slowly, because mutation rates are low. Assume that the gene allele A1 mutates to allele A2 at a rate m per generation and that at a given time the frequency of A1 is p.
Explanation:
Yes the following statements about her trout is likely true Because the ponds are different and the populations are likely to experience different mutations, the populations will likely diverge evolutionarily, but only over many generations.
Explanation:
The effect of genetic drift can be seen in all populations but the most is seen in small population. The change in allele frequency due to the sampling error would lead to evolution of the species.
Bottleneck effect is when a population gets reduced due to some natural disaster. Her friends were not right about bottleneck effect.
So it is clear that no bottleneck effect will occur as each pond have different chance or rate of mutation and the change in alleles will be different. The trouts will evolve independently in the different ponds and pass on the traits to their progeny.
Genetic drift does not take into account for the harm or benefit of the alleles that are passed on.
Answer:
C
Explanation:
Atoms share electrons. Electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the electronegativities of the atoms are too small for the transfer of electrons (to form ions).
Answer:
A cell that has Damaged p53 gene , A) may become Cancerous; B) may experience uninhibited and out of control cell division; C) may accumulate multiple mutation.
Explanation:
- p53 gene is a tumor suppressor gene that encodes a polypeptide that acts as a transcription factor.
- Mutation in p53 is associated with 50% of human cancers.
- Loss of p53 removes DNA damage check point.
- Mutation in p53 prevents DNA repair and the apoptosis of cells that contain irreparable damage.
- as a result the cells may accumulate multiple mutations.
- Since Functional p53 promotes DNA repair and arrest the cell cycle if a damaged DNA is present; any mutation in p53 may result in uncontrolled cell growth and tumor formation.
