Alleles. When it comes to genes, alleles are basically your options - you have three alternative options for hair colors. For example - if someone with brown hair has a child with someone who has blonde hair, the child will have the alleles of brown and blonde hair
Answer:
Telomerase acts to elongate the 3' end of linear DNAs.
Explanation:
The 5' ends of the linear DNA can not be replicated by DNA polymerase due to the absence of free 3' end to be elongated. This is prevented by the action of telomerase enzyme which contains both RNA and protein components. The RNA component of the telomerase is 150 nucleotides long.
The telomerase enzyme elongates the 3' end of the template strand by using its inbuilt RNA template. Since it uses an RNA template to make the DNA copies, it is a reverse transcriptase. Repeated translocation and repositioning of the enzyme elongates the 3' end of the template DNA.
The RNA primase makes the RNA primer at the end of the new telomere strand which is then elongated by DNA polymerase. DNA ligase seals the nick. In this way, telomerase serves to prevent the loss of 5' ends of linear DNA in successive rounds of DNA replication.
Answer:
Cyclical changes in eccentricity are changes in the shape of Earth's orbit.
Changes in obliquity are the changes in Earth's tilt on its axis.
Earth also experiences a precession around its axis.
The cycles affect climate by altering the duration of Earth's seasons and temperature decreases between summer and winter
Explanation:
