Question

Pedigree charts use shaded symbols to show organisms that have a particular trait, such as a defective gene, being traced in the chart. A breeder wants to make a pedigree chart of male horses to avoid breeding males that have a defective gene. What symbol would the horse breeder use to show a male who is affected by a defective gene?
A. shaded circle
B. shaded square
C. unshaded circle
D. unshaded square

Answer 1

The correct answer among all the other choices is B. shaded square. This symbol would the horse breeder use to show a male who is affected by a defective gene. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 

Answer 2

Answer:

B. shaded square

Explanation:

In pedigree analysis, squares represent the males while circles represent the female individuals. Since the horse breeder wants to show the male horse who is affected by the target gene, he should represent it with a shaded square. A shaded square in pedigree represents the affected males. Unshaded squares would represent the unaffected normal males.