Use your knowledge of genetics and pedigrees to complete this worksheet.
Seard
Sex-linked traits are those whose genes on the sex chromosomes and are found only on the X
chromosome, not on the Y chromosome.
Males: XY - have only 1 copy of the gene
Females: XX - have 2 copies of the gene.
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Females can be normal, show the trait, or be carriers. Males can either be normal or show the trait, but
cannot be carriers.
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Genetics
1. In squids, eye color is a sex linked trait. Red is dominant to black. XR represents
red eyes and X represents black eyes.
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A. What the sexes and phenotypes of squids with the following genotypes:
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XRX
XRY
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English (US
XRXR
XY
B. What are the genotypes of these squids:
Red eyed, male
Red eyed female
Black eyed female
Black eyed male:
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Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. threat method number of species that benefit number of years to see benefit habitat fragmentation reforestation 450 8 introduced prey species biological augmentation 150 2 which statement is an accurate explanation of the information in the table? a. biological augmentation would benefit only a few species because it is typically not very effective. b. biological augmentation would take less time to be effective because it targets the majority of prey species. c. reforestation would take the longest time to be effective because trees take several years to grow. d. reforestation would not benefit many species because most forest species live on the ground.

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