A nurse administers two serial intramuscular injections of betamethasone to a woman at 32 weeks' gestation who has been admitted in preterm labor. the nurse knows that this medication is given to stimulate fetal surfactant production. The presence of this surfactant factor in the pulmonary alveoli is essential for adaptation to extrauterine life. The surfactant is a substance that significantly reduces the surface tension within the pulmonary alveolus, preventing collapse during expiration.
Answer:
a) Genotype of each parent plant= Tt
b) Genotypes of parent plants= Tt and tt
Explanation:
a) In the first cross, the tall and short progeny was obtained in almost a 3:1 ratio (78: 27). This means that both the parent plants were heterozygous for the gene of plant height. The genotype of each of the parents was Tt. A cross between Tt and Tt gives following progeny ratio=
Tt x Tt = 3 tall (1/2 TT and 1/4 Tt) : 1 short (1/4 tt)
b) In the second cross, tall and short progeny was obtained in almost a 1: 1 ratio (121: 118). This means that one parent plant was homozygous recessive (tt) and the other was heterozygous dominant (Tt).
Tt x tt = 1 tall: 1 short.
Answer: They can both swim and have webbed feet. Although they both live in water, they both breathe air. They're both bug eaters. Both of them are vertebrates. Both of them lay eggs.
Explanation:
Answer:
The size and shapes of their beaks.
Explanation:
They have different food sources, so different shaped beaks are necessary, as well as size.
Organisms only require small amounts of nutrients in biological treatment, so there normally is an excess available in treated wastewater. In severe cases, excessive nutrients in receiving waters cause algae and other plants to grow quickly depleting oxygen in the water.. Hope this helped