Question

Mendelian Genetics II: Drosophila VING YOUR KNOWLEDGE y. . List the most obvious characteristics used to determine the sex of a fruit 2. A fruit fly geneticist discovered a genetic mutation that resulted in pupae and young flies with dark pigment granules in the nuclei and cytoplasm of their fat cells. After studying the inheritance of the mutation, the geneti- cist named the gene Frd (for Freckled). What does this name tell you about the inheritance of this gene? In another strain of fruit flies, geneticists discovered a mutation producing flies with no gut muscles. They named the gene controlling this pheno- type jeb (for jelly belly). What does this tell about the inheritance of this gene? 3. Is the genetic map or linkage map produced by determining recombina- tion frequencies an actual physical map of the chromosome? What addi- tional techniques do geneticists use to more precisely locate relative positions of genes on chromosomes? Refer to your textbook.

Answer 1

1)

• By looking at the color and shape of the body. The presence of stripes indicates a female
• The length of the fly. For female, the length is longer compared to male
• Notice whether it's pointed or obtuse. The guts of the female organic product fly aren't just longer than that of the male fruit fly. It is additionally pointed
• Search for hair on the forelegs. Locate the two legs on the front portion of the flies' bodies. These are their forelegs. Presently search for a fiber (otherwise called a sex brush). This gathering of minor, dull hairs is just present on male fruit flies

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