The only option given above that is true for natural selection to occur is option d: 'there must be competition for resources'. Natural selection would also occur under predatory pressure. Natural selection occurs through individuals with advantageous characteristics (phenotypes) surviving and passing on their genes (genotypes) to their offspring.
<span>In order for individuals best suited for growth and reproduction in a particular environment to contribute disproportionately to the next generation natural selection must take place. Natural selection is one of the basic mechanism of evolution. This mechanism leads</span> to adaptations and adaptations contribute to survival and reproduction.
Answer:
Receta de cocina. Lavadora a máquina.
Mezclador. Refrigerador de microondas. Ordenador
Televisión. Tableta. Célula. Impresora.
Go somewhere where there aren't any windows
Answer:
Most genes must be turned off because cells play specific functions, thereby only a limited number of genes must be expressed in each cell type in order to produce proteins required in the cell
Explanation:
Gener regulation is a critical molecular mechanism required for normal cell functioning. In consequence, genes are turned on and off depending on the cell type. For example, in the brain, cells that will be differentiated into neurons will be expressed, while genes involved in the differentiation of undifferentiated myoblasts into muscle cells will be turned off. Thus, genes are switched off in order to produce only those specific proteins which are required for each cell during specific developmental programs and functions carried out by each cell type.
