*Genetic determinism of sexes
*Two types are known.
I. Drosophila met at mammals , insects and some plants.
a) Chromosomes have notation:
Masculine ⇒ xy
Feminine⇒xx
II. Abraxas met at amphibians,reptiles,birds and fish.
a) Chromosomes have notation:
Masculine⇒xx
Feminine⇒xy
Answer:
The term nucleic acid is the overall name for DNA and RNA.
Explanation:
They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. ... The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Answer:
x = oxygen
Explanation:
Food and water is essential to life at cellular level because this water is responsible for making food with the help of CO2 during photosynthesis in plant and this food provides energy to the cell and support the life of plant cell. In an animal cell, H2O helps in releasing waste product from cell and provide a medium for reactions to occur.
Apart from food and water oxygen is also required to support life because oxygen is required by cells to oxidize food and release energy from food so this energy is used to perform metabolic function of cells that support cell life.
Archaebacteria. Archaebacteria are the most recent addition to the kingdoms of organisms.
Eubacteria. Eubacteria are also single-celled bacterial organisms.
Fungi. The Fungi kingdom is recognizable to us as mushrooms, molds, mildews and yeasts.
Protista.
Plants.
Animals.