A phylogenetic tree is the representation of the evolutionary relationships among species. The fossil records are used as evidence to develop a phylogenetic tree. Thus, option A is correct.
<h3>What is a fossil record?</h3>
A fossil record is a depiction of the organisms that shared common ancestors and depicts the change in the structural and functional unit of the organism over many years of time.
They are used to illustrate the phylogenetic tree to show the morphological, structural, chemical, anatomical, etc variations in species that shared ancestry.
Therefore, option A. fossil records are used to show the common ancestry at the nodes.
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Answer:
The tasting allele is dominant.
Explanation:
- The law of dominance states that the dominant allele will always express itself in homozygous or heterozygous conditions.
- While, the recessive allele Can express itself only in Homozygous recessive condition.
- The phenotypic ratio in case of monohybrid cross is 3:1 where i.e , about 3 out of every four offspring tends to express the dominant trait.
- According to the given statistics,80% of the population can taste PTC and 20 % cannot.
- Thus The tasting allele is a dominant allele.
B. Is correct because in mutualism both species benefit. It could be symbiosis but mutualism is more specific.
Answer:
Mass Difference= Final Mass- Initial Mass
To find the “Percent Change in Mass,” divide the “Mass Difference” by the “Initial Mass.”
Explanation:
Answer:
D. Acidification, increasing the pH of the ocean
