<u>Full question:</u>
What type of reproductive isolating mechanism is described by a situation in which female fireflies mate only with males who emit light in a particular pattern?
A) habitat isolation
B) temporal isolation
C) mechanical isolation
D) behavioral isolation
<u>Answer:</u>
Behavioral isolation described by a situation in which female fireflies mate only with males who emit light in a particular pattern
<u>Explanation:</u>
Behavioral isolation restricts the features of a species from mating. It is the unitedness of various manners that guide to speciation. In this means, the features of a group conflict overtime in their actions. This proceeds continuously they can no extended mate. They then enhance separate varieties.
Behavioral isolation also inhibits varieties that simply conflicted from interbreeding. This retains the pair species from uniting to mature the identical species anew. For instance, Two frog varieties are existing in equivalent circumstances. Pair individuals from these associated varieties could technically mate. Yet, they do not mate due to behavioral barriers.
The advantage of growing genetically engineered BT crops are increased crop yields, reduced pesticide use, less environmental damage, less fungal contamination and reduced labor.
Explanation:
Bt is a soil bacterium whose genome contains genes for several proteins toxic to insects. When it is sprayed on the surface of crops, Bt toxins breakdown quickly when exposed to ultraviolet light, and also wash them in a strong rain.
They offers environmental and economic benefits to farmers with increased crop yields, reduced pesticide use, less environmental damage, less fundamental contamination, and reduced labor.
Thus the advantages of growing genetically engineered Bt crops over spraying Bt on the crops include lower production cost,less pest problems, and better yields.
For a recessive trait to be expressed in a generation of offspring, an individual must be Homozygous for the allele
If stranded on a deserted Island with no freshwater, it is not advisable to drink sea water because B)
The salt in the body creates a hypertonic solution around cells, which causes water to diffuse out of cells and make them crenate.
A physical change is a change which only affects the form of a substance, but not its chemical composition. So, a physical change in terms of particle arrangement states that particles do not change apart from gaining or losing energy. It can be explained using the examples of freezing and melting.
When a substance is solid, its particles like atoms and molecules are very tightly packed. These cannot move freely but when a substance is in liquid or gaseous state, the particles are loosely packed and can move freely. So when water is solid the particles are tight but when it is in liquid state same particles can move faster. Hence, particles are same but their energy has changed.