Answer:
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). Variation may be shown in physical appearance, metabolism, fertility, mode of reproduction, behaviour, learning and mental ability, and other obvious or measurable characters.
chromosomes or by differences in the genes carried by the chromosomes. Eye colour, body form, and disease resistance are genotypic variations. Individuals with multiple sets of chromosomes are called polyploid; many common plants have two or more times the normal number of chromosomes, and new species may arise by this type of variation. A variation cannot be identified as genotypic by observation of the organism; breeding experiments must be performed under controlled environmental conditions to determine whether or not the alteration is inheritable.
Genotypic variations are caused by differences in number or structure of Environmentally caused variations may result from one factor or the combined effects of several factors, such as climate, food supply, and actions of other organisms. Phenotypic variations also include stages in an organism’s life cycle and seasonal variations in an individual. These variations do not involve any hereditary alteration and in general are not transmitted to future generations; consequently, they are not significant in the process of evolution.
Explanation:
Brainliest please?
Answer:
RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
Answer:
Explanation:Q.)ATP= ADENOSINE TRI PHOSPHATE, ADENOSINE DI PHOSPHATE, DNA= DEOXYRIBO NUCLEIC ACID, RNA= RIBO NEUCLEIC ACID
Q.) BLOOD IS RED DUE TO THE PRESENCE OF HAEMOGLOBIN. BLOOD CONSISTS OF RBC , WBC AND PLATELETS
Q.) GREEN REVOLUTION BROUGHT ABOUT CHANGES IN AGRICULTURAL INDUSTRY LIKE USE OF HYV SEEDS . WHITE REVOLUTION CHANGED THE DAIRY INDUSTRY
The removal of the cell membrane.
The membrane regulates homeostasis by letting "stuff" (general term) in and out of the cell.
Answer: B, the number of species in a community
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