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BigorU [14]
2 years ago
12

Normally, how many chromosomes are required to determine the outward expression of a trait?

Biology
2 answers:
Rus_ich [418]2 years ago
7 0
Hey there!

A homologous pair is required to determine the outward expression of a trait

Hope this helps!
marin [14]2 years ago
7 0

SOS:

The answer is <u><em>a homologous pair!</em></u>

<em>Hope this helps!</em>

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Describe how solar radiation reaches earth and is absorbed in emitted by earth atmosphere and surface
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Which two atoms form an ionic bond
julia-pushkina [17]

Answer:

GO learn dont cheat and the answer is B.

Explanation:

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2 years ago
Everyone in Smurfette’s family has light blue skin, which is the dominant trait for body color in her hometown of Smurf Valley.
Dmitry_Shevchenko [17]

Answer:

All their descendants will be heterozygous for the skin color, Bb, expressing blue skin.

Explanation:

<u>Available data</u>:

  • Smurfette has light blue skin
  • Her family is a "true bred" or "purebred" line.
  • She married a boy who has light yellow skin
  • blue skin is the dominant trait expressed by the B allele
  • yellow skin is a recessive trait, expressed by the b allele

Cross: Smurfette  x  Husband

Parentals)            BB     x     bb

Gametes)          B   B       b     b

Phenotypes) blue skin     yellow skin

Punnett square)

                       B        B

             b      Bb      Bb

             b      Bb      Bb

F1) 100% of the progeny will be heterozygous for the skin color, Bb

     100% of the progeny will be blue-skinned.

Note: Although the progeny is blue-skinned, they are not true-bred anymore.

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2 years ago
A. Mutualism
EleoNora [17]

Answer: parasitism

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