Transcription is the process by which the DNA molecule makes an RNA molecule using enzyme RNA polymerase and other proteins. The mRNA is then used to generate proteins by a process called translation which occurs in the cytoplasm. Transcription occurs in the nucleus because DNA cannot leave the nucleus.
Answer:
Given,
Colourless molecule is converted to black pigment by enzyme A. Black pigment is converted to agouti pigment by enzyme B.
Parent 1: AAbb = Black
Parent 2: aaBB = Colourless
AAbb X aaBB = AaBb (F1) The entire progeny is agouti coloured since dominant alleles for both the genes are present.
When AaBb X AaBb according to dihybrid cross in F2 :
A_B_ = 9 ( Agouti )
A_bb = 3 ( Black )
aaB_ = 3 ( Colourless )
aabb = 1 ( Colourless )
Hence genotypic ratio is 9 : 3 : 3 : 1
and phenotypic ratio is 9 (agouti) : 3 (black) : 4 (colourless)
Answer:
soil compaction causes floods because rainfall water cannot infiltrate into the soil.
Explanation:
The use of heavy machinery in an area for urbanization and other purposes have always caused a series of problems to the top soil. One of the major consequence of such activity is the compaction of soil. Soil compaction is caused when stress is applied into the soil and the density of soil increases as a result.
It has been found that soil compaction causes floods because rainfall water cannot infiltrate into the soil due to the compact density of soil. The water instead ends up in the surface which subsequently causes floods.
The answer would be C. Hope this helps :)
