A dihybrid testcross is done to determine if genes C and D are linked and 1000 progeny are analyzed. The results are: 222 Cc Dd; 280 Cc dd; 280 cc Dd; 218 cc dd. What are the parental allele configurations

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.