Can you provide more information please
Answer:
biosphere first then geosphere and the atmosphere
male gametes that contribute genetic information (DNA) but few or no nutrients to the offspring. the nuclei of the egg and one sperm unite to form the zygote; the other sperm nucleus fuses with the two polar nuclei, forming a triploid (3n) cell. so, a, I believe.
hope I helped!
Scientists have recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid. This new DNA is called recombinant DNA.
<h3>What is recombination DNA?</h3>
Genetic recombination is the exchange of genes between two DNA molecules to form new combinations of genes. Like mutation, genetic recombination contributes to the genetic diversity of a population, which is the source of evolutionary variation.
Bacteria have two mechanisms of genetic variability: mutation and gene recombination. Gene recombination occurs by three types of mechanisms: transformation, conjugation and transduction. Transformation is the incorporation of free DNA by the bacterial cell.
See more about DNA at brainly.com/question/264225
#SPJ1
