Expert answer:Assignment 4 Heredity – Complete the Punnett

  

Solved by a verified expert:Assignment 4 ­ HeredityName:Directions: Complete the Punnett Squares below and answer all associated questions (write legibly). Besure to include the proper terminology to describe the alleles and the ratios of the genotypes andphenotypes of the characteristics indicated for each item.1. Dominate-Recessive InheritanceIn humans, the gene for dimpled cheeks (D) is dominant over its allele for smooth cheeks (d). Completethe Punnett square given the parental cross (DD x dd). Complete the associated Punnett squareinformation.Genotypic ratio: ___________________________________Phenotypic ratio: __________________________________How many off-springs are heterozygous? ________How many off-springs are homozygous dominate? ________How many off-springs are homozygous recessive? ________Could they have a child who has dimpled cheeks? ________Which number(s)? ________2. Dominate-Recessive InheritanceA homozygous mother with small ears (e) marries a heterozygous man with large ears (E). Complete thePunnett square showing the off-spring possibilities. Complete the associated Punnett square information.How many off-springs are heterozygous? ________How many off-springs are homozygous dominate? ________How many off-springs are homozygous recessive? ________Will they have a child with small ears? ________Which number(s)? ________Assignment 4 ­ Heredity3. Multiple-Allele InheritanceThree babies were born in a hospital on the same night, and their blood groups were later found to be O,B, and AB. Complete the Punnett square to cross parents AB x O (simply using the ABO system) todetermine the blood type possibilities their off-springs would have. Use the Punnett square information todetermine which baby (A, B, AB, or O) belong to them.How many off-springs are blood type A? ________How many off-springs are blood type B? ________How many off-springs are blood type AB? ________How many off-springs are blood type O? ________Baby _________ belongs to the AB and O parents.4. Sex-Linked InheretanceCross the parents (XBY x XBXb). The father is normal and the mother carries the color blind trait. Theallele for color blind is b and normal is B. Complete the Punnett square showing the possible off-springsfrom this couple. Complete the associated Punnett square information.Could they have a child who is color blind? ________Which number(s)? ________

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