Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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5a. Blood Type--Multiple Alleles
Blood type in humans is a trait that is controlled by multiple alleles. The possible alleles that can be inherited are A, B, and 0, but each person only inherits two alleles. Alleles A and B both produce antigens, but O produces
no antigens. This means that a person who has an A or B allele or both will express that blood type. O is recessive to A and B so I like to use the lower case letteri to remind me that it is recessive. For example, Ai and AA =
blood type A, Bi and BB = blood type B, and AB = blood type AB. Since O produces no antigens, it does not affect blood type when paired with A or B, but when a person inherits two O alleles (ii), they have blood type 0.
For a cross between an individual with the genotype (Ai) and an individual with the genotype (BB). please fill n the Punnett square and genotypic and phenotypic ratios below.
(blank)
5b. Write the proportions, percents, and ratios for the genotypes and phenotypes of this cross
Genotype:
Proportions/Percents:
Ai =
/4 or
Bi =
/4 or
AB =
/4 or
AA =
14 or
BB =
/4 or
Ratio:
Phenotype:
Proportions/Percents:
Blood type A=
/4 or
Blood type B =
/4 or
Blood type AB =
(4 or
Ratio:
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Transcribed Image Text:5a. Blood Type--Multiple Alleles Blood type in humans is a trait that is controlled by multiple alleles. The possible alleles that can be inherited are A, B, and 0, but each person only inherits two alleles. Alleles A and B both produce antigens, but O produces no antigens. This means that a person who has an A or B allele or both will express that blood type. O is recessive to A and B so I like to use the lower case letteri to remind me that it is recessive. For example, Ai and AA = blood type A, Bi and BB = blood type B, and AB = blood type AB. Since O produces no antigens, it does not affect blood type when paired with A or B, but when a person inherits two O alleles (ii), they have blood type 0. For a cross between an individual with the genotype (Ai) and an individual with the genotype (BB). please fill n the Punnett square and genotypic and phenotypic ratios below. (blank) 5b. Write the proportions, percents, and ratios for the genotypes and phenotypes of this cross Genotype: Proportions/Percents: Ai = /4 or Bi = /4 or AB = /4 or AA = 14 or BB = /4 or Ratio: Phenotype: Proportions/Percents: Blood type A= /4 or Blood type B = /4 or Blood type AB = (4 or Ratio:
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