Wolves will either have gray coats (G) or black coats (g), brown eyes (B) or blue eyes (b). If a male wolf with a black coat and blues eyes breeds with a female wolf heterozygous for coat and eye color??

What is the chance their offspring will have the following genotypes?
Write them in ratio form out of 4.
Im not sure if i write 4 punnet square

Answer 1

See below.

Understand what you're working with. You have a dominant-recessive cross for two traits.

First, start with the trait that you're interested in.

  1. Trait: eye colour, coat colour

    Second, write out the key for possible combinations of traits you have.

    1. Key

      Genotype Phenotype
      Coat colour
      GG Grey
      Gg Grey
      gg Black

      Eye colour
      BB Brown
      Bb Brown
      bb Blue

      Then, write down the genotypes of the parents.

      1. Mom: Gg, Bb; Dad: gg, bb

        Your possible gametes are:

        From mom: GB, Gb, gB, gb
        From dad: gb

        Then, do your Punnett square

        Now that you got all the possible kid genotypes, write them out

        1. Genotypes: Gg,Bb; Gg, bb; gg, Bb; gg,bb

        2. Genotypic ratio: 1:1:1:1

        3. Phenotypes: grey coat, brown eyes, grey coat blue eyes, black coat brown eyes, black coat blue eyes.

        4. Phenotypic ratio: 1:1:1:1

        And you're done!

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Answer 2

The male wolf with a black coat (gg) and blue eyes (bb) would contribute a gamete with the genotype gb. The female wolf heterozygous for coat and eye color (GgBb) could produce gametes with the genotypes GB, Gb, gB, and gb. The possible combinations from the mating would be: GB (gray coat, brown eyes), Gb (gray coat, blue eyes), gB (black coat, brown eyes), and gb (black coat, blue eyes). Therefore, the offspring could have a mix of gray and black coats with brown or blue eyes.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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