<span>Schleiden and Theodor Schwann (1810-1882)were the first to recognize that all plants and animals are composed of cells. [ In 1839, they defined their "cell theory" in which they also stated that nuclei and cell membranes are common to all cells and recognized the presence of unicellular (single-celled) and multicellular (many-celled) organisms. ( ]</span>
Because for female sex link desease would require X°X° but for male X°Y so during crossing X linked dear are more common in male.
1. Carbon Cycle
Google Definition below
The series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
Explain how amino acid sequence data can help scientists infer patterns of evolutionary relationships between species. ... A gene's DNA sequence determines the order of amino acids that make up a protein, so changes in the DNA sequence often result in changes in the amino acid sequence as well.
