The article in the journal is the secondary source.
Explanation:
A research literature review can be constructed by taking information from two types of sources which are grouped as primary sources or secondary sources.
The primary sources include the original research papers, excerpts written by the scientists himself or any other original documents.
Any article published in magazines, newspapers and journals that reflect the original result but do not have the exact words written in the research paper are all secondary sources.
The birds eggs vary in size from the tiny 0.2 Grams to like about 9 kilograms
The percentage of progenies with red eyes and spine will be 56.25%.
<h3><u>Explanation:</u></h3>
This cross will be just similar to Mendel’s Dihybrid cross where he crossed the pea plants considering two characters at once.
Here two characters that are taken into account are eye colour and presence of spine. The eye colour has two traits - red and brown. Red colour is dominant. The presence of spine has also two possibilities - presence of spine or absence of spine.
The allele denoting red eye colour is R and allele denoting brown eye colour is r. Similarly, the allele denoting presence of spine is S and absence of spine is s.
Genotype of the heterozygous parents = RrSs.
Gametes produced by the parents= RS, Rs, rS and rs.
So crossing them, we get the phenotypic ratio of red eyed spined : red eyed spineless : brown eyed spined : brown eyed spineless = 9:3:3:1.
So, the percentage of red eyed spined = 56.25%.
Answer:
the key to an enzymes function is the speed
Explanation:
