The function of Helicase in the process of DNA replication is to untwist the double helix and separating the two DNA strands. This action of helicase creates the replication forks and replication bubbles where the process of replication is initiated. Their main role is the separation of double-stranded DNA into single strands allowing each strand to be copied during the process of replication. It may also function in other cellular processes where the double-stranded DNA must be separated, including transcription and repair. <span />
Depending on what trait the alleles carry, the brothers will have a different phenotype and a different genotype.
For example; Eye color. My sister is heterozygous, meaning she has brown eyes. I am homozygous recessive, meaning I have blue(green/hazel) eyes. We both have the same parents, I just happened to inherit both of the recessive eye color alleles from my parents whereas, my sister inherited both the dominant and recessive alleles.
So, since the brothers inherited different sets of alleles, their genotype for a certain trait will be different.
Answer:
Option D, Zero out of four (0%)
Explanation:
As we know, achondroplasia is an autosomal dominant pattern. Now a girl having normal stature mate with a partner who also has a normal stature.
Thus let us assume -
Allele for disproportionately short arms and legs be represented by "A"
while allele for normal stature be represented by "a"
Now genotype of parents would be
Female - aa
Male - aa
Thus,
aa x aa
aa, aa, aa, aa
Thus, option D is correct.
The over-hunting of the Baleen Whales lowers the population significantly. Since Baleen Whales eat the penguins, less whales equals less penguins eaten; therefore the penguins' population remains about the same until breeding season, where a surplus of baby penguins are produced.
