Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mates with an individual heterozygous for free earlobes?

A) 2:1
B) 1:1
C) 1:2:1
D) 3:1


B

Biology & Microbiology

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Chorionic Villus Sampling reveals that a fetus has the karyotype 47, XX, +21. What is the diagnosis?

A) Edward syndrome B) Turner syndrome C) Down syndrome D) Klinefelter syndrome

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a. soil shoes. b. stain clothes. c. pollute bodies of water. d. cause infections. e. cause all of these

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Which plant hormone listed below is

responsible for the symbiotic relationship shown in the above figure? a. auxin b. gibberellin c. cytokinin d. jasmonic acid e. abscisic acid

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