1. Cross a heterozygous tall (Tall is dominant) pea plant with one that is also heterozygous for tallness. If 100 plants are produced, about how many will be tall? How many will be short?
50% tall, 50% short wa
2. Dihybrid Crosses
Do the following for the examples below:
1) Write parental genotypes
ii) Identify possible gametes for each parent
iii) Make a punnet square
iv) Solve for F1 genotype and phenotypic ratios

Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10