Answer:
Years of pressure on remains sediments and plants.
Explanation:
Stage 1- Over millions of years, layer after layer sediments and other plants and bacteria were covered with soil.
Stage 2 - As they became buried ever deeper, heat and pressure began to rise.
Stage 3- The amount of pressure and the degree of heat, along with the type of biomass, determined if the material became oil or natural gas.
Answer:
1. Option A
2. 0%
Explanation:
A) Given Curly hair is dominant over straight hair.
Let the allele representing straight hair be "c"
and the allele representing curly hair be "C"
a) a woman heterozygous for hair curl, a man heterozygous for hair curl will
Cc * Cc
CC, Cc, Cc, cc
75 % curly and 25 % straight hairs
Hence, option A is correct
B) TT * Tt
When TT or Tt is crossed with tt, not all offspring will be tall
In order that all offspring are tall , the probability that both the parents must be homozygous recessive is 0%
The tetrad occurs during the first phase of meiosis. It is the foursome of chromatids that forms when replicated homologous chromosomes align. It must be formed for crossing over to occur. It is broken apart when the homologous chromosomes separate in meiosis I
1.ans
The best explanation of why viruses are not classified by the Linnaean taxonomy is due to C. the Virus can't reproduce outside of a host cell, which means that the host is necessary for its survival and reproduction, and without it cannot live on its own accord, so they are considered non-living, that can't metabolize and undergo the essential reactions of their own.
2.ans
Because both domains are capable of sharing segments of DNA with unrelated organisms which makes genetic classification difficult.
3.ans
It would make it possible to compare that species to other species at a level deeper than outward appearance
The proteins like hemoglobin and enzymes can be studied to see whether organism which are similar in form can also be related to each other. Its differences found in these proteins' amino acid sequences will present how closely or distantly related an organism is to another.