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The ability to roll your tongue (R) is dominant to not being able to roll your tongue (r). Create a Punnett square on a separate sheet of paper. Paula is heterozygous for rolling her tongue. Her husband Tony cannot roll his tongue. What are the chances that they will have a child with the RR genotype? *

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Please answer the following 10 questions below about humangenetics.
Achondroplasia (dwarfism) is an autosomal dominant disorder. Adwarf mother and a dwarf father have 4 children. The first 2 aredwarfs, and the last 2 are of normal height.

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2) What is the mother’s genotype?

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Color-blindness is a sex-linked recessive disorder. A heterozygousfemale mates with a male with a colorblind male.

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The ability to roll your tongue and having freckles are bothautosomal dominant traits. A woman who cannot roll her tongue, andis heterozygous for having freckles mates with a man who ishomozygous dominant for both traits.

7) What are the chances of this couple having a child who ishomozygous dominant for both traits?

8) Heterozygous for both traits?

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10) Heterozygous for one of the 2 traits?

In humans, hairy elbows, freeearlobes, and the ability to roll your tongue are all dominantforms of these traits. Let the alleles controlling these berespresented by the letters H, E, and R, respectively (and theopposing alleles being h, e, and r, respectively. None of thesetraits are sex linked. Sam's father has hairy elbows, freeearlobes, and can roll his tongue, but Sam and his mom both havehairless elbows, attatched earlobes, and can't roll their tongues.For possible partial credit int his problem, offer writtensolutions along with each of your answers.

1. What is Sam's genotype?

2. What is Sam's father's genotype?

3. Indicate all of the possible types of gametes Sam could make,with res[ect to these three genes only.

4. If Sam married a woman homozygoues dominant for all threetraits andt hey had a child, what would the child's phenotpye bewith respect to these three traits?

I am somewhat new to this site although I am a member, so I havethese questions I have answerd most of them my self yet I wouldlike to see if any experts, or people with some knowledge couldcould go ahead and do them so i can see if I am correct or not. Idont actually expect anybody to be able to make a punnet square, asI myself had to make my punnet squares on paper. But these are thequestions below, I will put my answers the ones I have gotten in () but if you are either able to tell me if im correct or if notshow me some sort of steps to becoming correct? Thanks ZackCross.

Solve all of these problems using a Punnett Square. ( I Havedone this mostly on paper)

In certain bacteria, an oval shape (A) is dominant over round(a) and thick cell walls (B) are dominant over thin (b). A bacteriaheterozygous for both oval shape and a thick cellwall was crossed with a round bacteria with a thin cell wall.Describe the phenotype of the offspring.

(My answer not sure if correct but I got : Oval Thick wall: Oval Thin wall : Round thick wall: Round thin wall

1:1:1:1)

2. The ability to roll the tongue sideways (A) is dominant overthe inability to roll one's tongue (a). In humans, non-attachedearlobes (B) are dominant over attached earlobes (b). Two parentswith attached earlobes can roll their tongues. They are bothheterozygous for the tongue rolling trait.

  1. What is the genotype of the mother? ( I got Bb Aa)
  2. What is the genotype of the father? ( I got Bb Aa)
  3. What are the possible gametes from the mother? ( I gotBA Ba Ab ab)
  4. What are the possible gametes from the father? ( I got BA Ba Abab)
  5. Draw the Punnett square, and combine the gametes to produceoffspring( I did on paper)
  6. What is the phenotypic ratio of these offspring? (Didn'tunderstand?)

  1. A man heterozygous for non-attached earlobes can roll histongue. A woman with attached earlobes can roll her tongue. Assumeboth are heterozygous for the tongue-rolling trait.
    1. What is the genotype of the mother?
    2. What is the genotype of the father?
    3. What are the possible gametes from the mother?
    4. What are the possible gametes from the father?
    5. Draw the Punnett square, and combine the gametes to produceoffspring
    6. What is the phenotypic ratio of these offspring?

  2. In summer squash, white fruit color (W) is dominant over yellowfruit color (w) and disk-shaped fruit (D) is dominant oversphere-shaped fruit (d). If a squash plant purebreeding for whiteand purebreeding for disk-shaped fruit is crossed with a plantpurebreeding for yellow, sphere-shaped fruit, what will thephenotypic and genotypic ratios be for:
    1. the F1 generation?
    2. the F2 generation?

Any Help would be greatly apretiated I don't understand how thepoint system works but I did purchase the membership package thingso I do believe I will be able to award someone with these karmapoints which I purchased.

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