Biology

Biology, 16.10.2019 16:30, bridgetosanders

17.) a line through a circle or square means?
18.) draw two parents that have a male first and then a set of female twins.
19.) what are pedigrees used for? to track the presence or absence of a givin trai
20.) what is nondisjunction?
21.) down syndrome involves how many copies of chromosome 21?
22.) nondisjunction in females causes what syndrome? how does this happen?
23.) nondisjunction in males causes what syndrome? how does this happen?
24.) cystic fibrosis results from what specifically happening to dna bases in a single gene?
25.) what are the advantages of carrying on copy of sickle cell?
26.) what are the advantages of carrying one copy of the cystic fibrosis allele?
27.)what process is used to separate and analyze the different sizes of dna fragments?
gel electrophoresis

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Sickle cell anemia is known to run in a family. a pedigree chart for this family is shown below. the parents are shown at the top and from left to right appear as a half-shaded circle labeled 1 next to a half-shaded square labeled 2. the two are connected by a straight line. below the parent pair is a vertical straight line connecting to the next row of circles and squares which are the offspring. starting from left an unshaded square labeled 1, half-shaded circle labeled 2, another half-shaded circle labeled 3, and a completely shaded square are shown labeled 4. all of these are also connected by a horizontal straight line. what best describes offspring 4? a. a female carrier of the disease b. a female having the disease c. a male carrier of the disease d. a male having the disease

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Biology, 15.07.2019 04:00, cabrerafreddy780

Sickle cell anemia is known to run in a family. a pedigree chart for this family is shown below. the parents are shown at the top and from left to right appear as a half-shaded circle labeled 1 next to a half-shaded square labeled 2. the two are connected by a straight line. below the parent pair is a vertical straight line connecting to the next row of circles and squares which are the offspring. starting from left an unshaded square labeled 1, half-shaded circle labeled 2, another half-shaded circle labeled 3, and a completely shaded square are shown labeled 4. all of these are also connected by a horizontal straight line. what best describes offspring 4? a female carrier of the disease a female having the disease a male carrier of the disease a male having the disease

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17.) a line through a circle or square means?
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