Genetics problems ed Mendelian 1) All the offspring of a cross between a black-e

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Genetics problems ed Mendelian 1) All the offspring of a cross between a black-eyed Mendelian and an orange-ey have black eyes. What is the expected phenotypic ratio of a cross between two orang Mendelian? 2) An individual with curly hair and an individual with straight hair mate; all of their offspring have wavy hair. If an individual with wavy hair mates with an individual with straight hair, what is the probability that their child will have curly hair? 3) Justin has type A blood and his wife Brittany has type B blood. Justin's parents both have type AB Justin and Brittany's son Theodore has type A blood? blood, and Brittany's parents also both have type AB blood. What are the chances that 4) A colorblind woman marries a man who is not colorblind. What is the phenotypic ratios a sons? Daughters? 5) Hypophosphatemia (vitamin D-resistant rickets) is inherited as a sex-linked dominant trait. The relevant gene is found on the X chromosome. What is the expected outcome of a cross between a homozygous recessive woman and a man with hypophosphatemia? 6) In cats, yellow color is due to one allele, and black color is due to another allele. The heterozygous condition results in a color known as tortoise shell, with both alleles expressed This gene is on the X-linked. What is the phenotypic ratio of the offspring between a yellow male and a tortoise-shell female? 7) Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (v). What is the expected phenotypic ratio of a cross between an RrYy and an rryy individual? 8) In humans, free earlobes are dominant to attached earlobes and the presence of freckles i dominant to the absence of freckles. If an individual heterozygous for both of these traits were to mate with an individual with attached earlobes and no freckles, what is the probability of having a child with attached earlobes and freckles? 9) In humans, freckles is dominant over absence of freckles, and curly hair is incompletely dominant with straight hair. A freckled, wavy-haired woman mates with a freckled straight- haired man. Both the man and woman have one homozygous dominant parent and one homozygous recessive parent for freckles. What is the phenotypic ratio of the man and woman's offspring?

Explanation / Answer

ANSWER : 1

The expected phenotype ratio of a cross between two orange eyed mendAlians will be 0:1 ( i.e. 0 blacked-eyed ; 1 orange eyed.

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