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

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.

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up