Nothing according to space in time
The challenges that scientists who want to study particular genes face are as follows:
1. There are many genes on a typical chromosome - A chromosome<span> typically contains hundreds to thousands of </span><span>genes.
2. </span>A small fraction of each chromosome encodes genes - <span> Genes only make up a small percentage of the genome; the rest is composed of non-coding sequences.
3. </span>It is difficult to distinguish between genes and non-coding genetic information - discriminating between<span> coding and </span>noncoding<span> regions in a given nonannotated genomic sequence is quite difficult.</span>
Answer:
Biodiversity: Tropical rainforests are areas of extremely high biodiversity compared to other ecosystems. Biologists estimate that tropical rainforests contain about 50% of the world's terrestrial plant and animal species, yet they encompass only about 6% of the world's land area.
Explanation:
Answer:
Phenotypic ratio: 0 Red : 4 Pink : 0 White
Genotypic ratio: 0RR : 4RR' : 0R'R'
Explanation:
This question involves a single gene coding for flower colour in Japanese four o'clock plants. The allele for red color (R) exhibits incomplete dominance over the allele for white color (R'), hence, they form a hybrid (RR') that is blending of both phenotypes (Pink).
In a cross between a red plant (RR) and white plant (R'R'), red and white four o'clock plant will produce gametes R and R' respectively. Using these gametes in a punnet square (see attached image), four possible offsprings that all have a genotype: RR' will be produced. This means that all offsprings of this cross are pink colored.
Therefore,
Genotypic ratio= 0RR : 4RR' : 0R'R'
Phenotypic ratio= 0Red : 4Pink : 0White