Answer: Please refer to:
Promethazine is in a class of medications called phenothiazines. It works by blocking the action of a certain natural substance in the body.
Explanation:
I'm not sure but hope it helps.
<span>Covered with tough dry scales.
Ectothermic(an animal that's dependent on body heat)
Breathe with lungs throughout there lives
Three-Chambered heart with a ventricle that is partially divided
Produce amniotic eggs covered with a leathery shell, most oviparous, some oviparous.</span>
The rate for a recessive allele to decline to half its initial frequency will depend on the presence of selective evolutionary forces and random mating.
<h3>What is recessive allele frequency?</h3>
The recessive allele frequency refers to the initial frequency of a recessive allele in a population, which is masked in heterozygous individuals.
The recessive allele frequency depends on the adaptive fitness of this gene variant, the presence of selective forces and random mating, that facet its rate of change.
In conclusion, the rate for a recessive allele to decline to half its initial frequency will depend on the presence of selective evolutionary forces and random mating.
Learn more about recessive allele frequency here:
brainly.com/question/8518551
#SPJ1
