dihybrid cross: black fur in mice (b) is dominant to brown fur (b). the short tail trait (t) is dominant to long tails (t). what proportion of the progeny of the cross bbtt x bbtt will have black fur and long tails?

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Biology

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dihybrid cross: black fur in mice (b) is dominant to brown fur (b). the short tail trait (t) is dominant to long tails (t). what proportion of the progeny of the cross bbtt x bbtt will have black fur and long tails?

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RupaBerago RupaBerago · Answer 1

Black fur and long tails will be present in half of the offspring of the bbtt x bbtt hybrid.

How many of the offspring of the BBtt X BBtt hybrid will have long, black tails?

50% of all creatures will have characteristic long tails and black fur. Explained: The given cross is a form of back cross in which a recessive parent and an organism from the f1 generation are combined. There will be 50% BbTt and 50% BBtt as a result.

What genotype do the mice have that have black fur?

The black mouse under investigation may have the BB or Bb genotype, according to Mendelian genetics. It would be cross-tested with a genotype bb (white fur phenotypic) in order to ascertain the genotype.

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