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In dogs barking trait is dominant over t...

In dogs barking trait is dominant over the silent trait and erect ears are dominant over drooping ears
(a)What is the expected phenotypic ratio of the offsprong when dogs heterozygous for both the traits are crossed ?
(b)What would be phenotypic ratio if dogs heterozygous for the traits are crossed with dogs homozygous recessive for both traits?

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(a)Because the cross involves two characters,it explain Mendel.s law of independent assortment under dihybrid cross.When dogs heterozygouss for both the traits are crossed .The expected ratio in `F_(2)` is `9:3:3:1`.
(b)When dogs heterozygous for the traits is crossed with dogs homozygous recessive for both the traits exected result will be `1:1:1:1` (Result of dihybrid test cross).
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