Are cracks in Earth’s crust cause rocks to break and move are younger that surrounding rocks
Answer:
a. most genes encode one polypeptide and can be operationally defined by the complementation test
Explanation:
Genes are the stretch of DNA that code for specific polypeptides. In general, one gene codes for the only polypeptide.
Genes are defined by complementation tests which in turn tell if two mutations have occurred in the alleles of the same gene or different gene.
For the purpose, an organism with the homozygous genotype for one recessive mutation is crossed with an organism having the homozygous recessive genotype for another mutation.
If the two mutations are in the same gene, the progeny would show the mutant phenotype. On the other hand, if two mutations are in different genes, the progeny would exhibit normal phenotype.
The right answer is GL
Its offspring will have at least one dominant genotype of the body color (which is grey) and at least one dominant genotype of the wing length (which is the lon one), so it could be:
Gg Ll
GG Ll
GG LL
Gl LL
The answer is B) mutation
A mutation is the alteration of a nucleotide
sequence in DNA. <span>Changed DNA sequence is transcribed into
RNA. This changed RNA sequence is
translated into misformed protein.
</span>
Replication is a process in which DNA molecule is copied, and thereby two identical DNA molecules are produced. Transformation is a process of incorporation of the foreign genetic material into cell's genetic material.
Answer:
Ribosomes are present attached to the rough ER:
1. To easily make proteins that are required inside and outside of a cell.
2. To take up amino acids easily.
3. To make it easier for the mRNA to travel from the nucleus to the ribosomes.
Explanation:
Ribosomes are involved in the synthesis of proteins. The rough endoplasmic reticulum is attached to the nuclear envelope. Hence, this provides an easy pathway for molecules to travel between the nucleus, rough ER and endoplasmic reticulum.
During the formation of a protein, mRNA is formed and the mRNA travels to the ribosomes through the rough ER. The location of the ribosomes makes it easy to take mRNA from the nucleus and amino acids from the cytoplasm and make proteins. When a protein is made, it can be used inside the cell or can be transported to the Golgi apparatus etc.
