Answer:
phages are non-living biological entities that can produce numerous copies of themselves, forming ordered three-dimensional structures on a nanometre scale
Explanation:
A phage (i.e., a bacteriophage), is a virus capable of infecting and replicating within bacteria. Bacteriophages are composed of proteins forming a capsid that encapsulates the genetic material (either DNA or RNA genome), which may contain a variable number of genes. Bacteriophages, and viruses in general, can be considered nanomachines capable of producing numerous copies of themselves with high fidelity by utilizing the molecular machinery of the host bacterial cell. In biotechnology, it has been proposed to exploit the knowledge about bacteriophage reproduction to design diverse nanostructures.
Ecological succession occurs due to the changes in physical environment and population of species. In an ecosystem, a species requires a particular set of environmental conditions under which they grow and reproduce.
All cells need cytoplasm because the cytoplasm is the environment in which the organelles<span> sit in a </span><span>cell.</span>
Answer:
human invasions and expansion/contraction cycles during glacial-interglacial periods
Explanation:
In 1961, the biologist Edward Osborne Wilson studied the distributional, behavioral and morphological characteristics of ants living in the Melanesian archipelago. After his study, Wilson then proposed a hypothesis to explain the biogeographic dynamics of Melanesian ants which has been referred to as the 'taxon cycles'. Taxon cycles are defined by stages of expansion and contraction in the range of distribution of species combined with evolutionary adaptive changes in their ecological niches. These cycles can be represented by historical processes of invasion that resemble human invasions. In the last years, it has been shown that Wilson's hypothesis is supported by predictions obtained by modern methodologies for investigating taxon cycles (i.e., evolutionary phylogenetic methods).
Answer:
a. Yes. It is possible for them to produce a child with red-green colorblindness.
Explanation:
Color blindness is a change in vision that is characterized by the inability to distinguish some colors, especially green from red. Like hemophilia, color blindness is an example of inheritance linked to sex.
Color blindness is determined by an X-linked recessive gene, symbolized by Xd while the dominant allele gene, which conditions normal vision, is symbolized by XD.
Thus we can conclude that it is possible that the couple, exposed in the question, have a child with red-green color blindness. As the child's father already has the recessive gene, which is likely to be passed on to the child, if the mother also has the recessive gene for color blindness, the child is likely to develop red green color blindness.
