Anew species of plant is discovered in the jungle. some plants have red berries, but others have purple berries. the two types of plants are crossed. it is noted that all the berries from the plants in the f1 generation are purple, but some of the f2 generation plants have red berries. what is the best explanation for these observations? purple is the recessive trait.
choices:
a) purple is recessive trait
b) there is evidence of codominance
c) purple is the dominant trait
d) there is evidence of incomplete dominance

c) purple is the dominant trait

Explanation:

The F1 generation has dominant characteristics because it is the result of the crossing of two homozygous plants (one dominant - AA- and the other recessive- aa). As a result, the F1 generation is heterozygous (Aa) and expresses the dominate characteristic (purple color), however the crossing of F1 generation plants will form both dominant and recessive offspring.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave