Theories are an idea that science have and they aren’t always right so false
Answer:
The correct answer is: The limited variability in the size of shells in the initiating population.
Explanation:
- The shell size in snail species is determined by a number of variants (alleles) of the gene that is responsible for determining the size of their shell.
- The number of variants of the gene encoding for shell size is limited.
- However, the different variants may encode for different shell size, say from 5 millimetre to 20 millimetre.
- All these variants are present in the original population of snail but in different proportions.
- However, if predation tend to target the snail species with smaller shell size (5 millimetre to 10 millimetre) then evolution would tend to increase the frequency of snails having the larger shell variants (15 millimetre to 20 millimetre).
- This will result in a population of snails with increased shell size.
- However, an increase in shell size over 20 millimetre is not possible because no allelic variants encoding for a shell size greater than 20 millimetre is available in the population.
Sexual Reproduction: There is more genetic diversity, it promotes survival, and removes bad genes from the population.
Asexual Reproduction: It is faster, and no mates are required.
Brainliest answer, please?
The Mutation That Affects The Gametes Of An Organism Are Called SOMATIC Mutations.
Answer:
c. DNA
Explanation:
The DNA is double stranded molecule that twist around each other to form a double helix structure. Each strand consists of nucleotide bases joined together by deoxyribose sugar-phosphate backbone.
<em>The two strands of the DNA lies anti-parallel to each other and each strand has two ends - the 5' end where the phosphate group gets attached to the 5′ carbon of a ribose sugar and the 3' end where there is a free hydroxyl group attached to the 3′ carbon of a ribose sugar.</em>
Hence, the correct option is c.