What does the phylogenetic tree show

1 answer:

8 0

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.

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When explaining dominant and recessive traits to a younger family member, they respond, "Well chances are I can probably taste P

8_murik_8 [283]

Dominant traits for PTC aren't more or less common than recessive traits, because neither trait actually increases the chances of a person to survive and reproduce more. This means that the frequency of both traits in the population is roughly 50%. It also largely depends on your genes. If both your biological parents were homozygous dominant for the trait, then you 100% will be able to taste PTC, because you are also homozygous dominant for the trait. If both your parents were homozygous recessive for the trait, then you 100% won't be able to taste PTC, because you are also homozygous recessive for the trait. If only one of your parents was heterozygous, and the other parent was homozygous dominant for that trait, then you may have the recessive allele, but it won't be expressed because it will always be paired with the dominant allele. If only one of your parents was heterozygous and the other parent was homozygous recessive for the trait, then you will have the recessive allele, and there is a 50% chance that the recessive allele, or dominant allele is expressed. If both your parents were heterozygous, then you have a 75% chance of expressing the dominant allele, and a 25% chance of expressing the recessive allele. It largely depends on what your parents have, because the ability to taste PTC isn't something that has the potential to influence your likelihood to reproduce or live longer.

(Dominant allele - Taste PTC)

(Recessive allele - No taste)

7 0

2 years ago

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Histamine increases blood flow and vascular permeability. This would account for all of the following changes that occur during

Katyanochek1 [597]

Answer:

chemotaxis of phagocytes

Explanation:

Histamine is a chemical involved in inflammation but it also has role as a neurotransmmiter in central nervous system and uterus It is synthesized by the two types of cells: basophils and mast cells and it acts via binding to its receptors (histamine receptors). Roles of histamine are: