You are running a nursery for garden peas at baton rouge, and you have two pure-bred garden pea strains: yellow wrinkled [yyrr] and green round [yyrr]. you know that yellow is dominant to green, and also that round is dominant to wrinkled. one customer dropped by and asked about one particular pure-bred strain, yellow round [yyrr]. you promised to that customer that you could generate that strain next year through the following breeding experiments.
i. crossing pure-bred yellow wrinkled with green round
ii. self-crossing f1 progeny
iii. screening pure-bred yellow round among the f2 progeny

what is the genotype for f1 progeny?

a. yyrr
b. rryy
c. yyrr
d. yyrr
e. none of the above

C. YyRr

Explanation:

The cross was done between pure-bred Yellow Wrinkled and Green Round plants. The genotype of the pure breeding yellow wrinkled parent plant: YYrr. The genotype of the pure breeding green round parent plant: yyRR.

A cross between YYrr and yyRR would obtain the progeny in the following ratios:

YYrr x yyRR= All YyRr (yellow and round)

burning fossil fouls really decrease the carbon in the atmosphere so b

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.