The Dna in linear eukaryotic chromosomes is swrapped around protein called histones.
Answer:
False
Explanation:
Genetic variation is the difference in the sequence of DNA in the individuals of a population and a heterozygote has more genetic variation that homozygote person because heterozygote has two different alleles of a gene while homozygous individual have two same alleles.
Heterozygotes have advantage over homozygotes because it protects the individual from many genetical diseases and increase the genetic variation by increasing the gene pool in the population. So higher fitness results in more genetic variation in the population therefore the statement is false.
Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
Answer:
Question contains 6 statements.
1. a substitution of G to U at position +13 in the sense strand
2. a transition at position +12 in the antisense strand
3. a transversion of C in the sense strand of the histidine codon
4. a G nucleotide is inserted after position +1 in the antisense strand
5. a deletion of the A at position +7 in the antisense strand
6. an insertion of A between positions +7 and +8 on the sense stands
Among these only 2 statements are correct.
Below are the correct statements.
Explanation:
2. a transition at position +12 in the antisense strand
5. a deletion of the A at position +7 in the antisense strand