The correct answer is: Replacement of defective genes with normal genes
Recombinant DNA molecules are made in laboratory by the methods of genetic recombination such as molecular cloning. The aim of these methods is to bring together genetic material from different sources, creating “combinations” that usually couldn’t be found in the genome. The process of recombination is possible because, DNA molecules from all organisms share the same chemical structure (nucleotides are same among different species, difference is only in the nucleotide sequence).
Answer is A.
Archaea requires neither sunlight for photosynthesis as do plants, nor oxygen. Archaea absorbs CO2, N2, or H2S and gives off methane gas as a waste product the same way humans breathe in oxygen and breathe out carbon dioxide. An example is chemosynthetic bacteria by sea drifts. They use chemical energy to produce vital processes to live.
Answer:
The best answer from the list of options is option D (They are colorless and feed on other, smaller cells)
Explanation:
Euglenas have cells that contain chloroplasts, which means they can make their food like plants through photosynthesis, and when it is dark where they can't get sunlight they can also make food by engulfing their prey through the plasma membrane and absorb them. Euglenas are heterotrophic since they call also feed on smaller cells. Their whip-like tail when viewed under the microscope, is colorless. However, the chloroplasts make them appear green and they can also come in red color.
The inner layer, the dermis, consists of a superficial papillary region of loose, areolar connective tissue, connective tissue and a thicker and deeper reticular region of dense irregular connective tissue connective tissue.
<h3>The layers of the skin</h3>
The skin is the largest peripheral organ that covers the outer layers of the body. It is made up of two layers namely:
- Epidermis: The epidermis is the outer layer and it is made up of stratified squamous epithelium.
- Dermis: The dermis is the inner layer of skin. it is made up of superficial and deep layers.
The superficial layer is made up of papillary region of loose areolar connective tissue which helps to attach epithelial tissue to other underlying tissues.
While the deep layer is made up of dense irregular connective tissue which provides strength, making the skin resistant to tearing by stretching forces from different directions.
Learn more about the skin here:
brainly.com/question/306377
