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ICE Princess25 [194]
3 years ago
14

Approximately how many hours per day do newborns spend sleeping?

Biology
1 answer:
qwelly [4]3 years ago
4 0
They typically sleep about 16-17 hours a day; that’s a lot!
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the venn diagram details some of helpful and harmful effects of bacteria. in what ways are viruses like bacteria
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Breaking down food into simpler substances that the cells can use is the process of ____
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3 years ago
The gene for petal color in a flower has incomplete dominance, so that individuals with two A1 alleles (A1A1) are black, individ
Verdich [7]

Answer:

The probability of getting a mottled offspring is 0%. There is no A2 allele involved in the cross.

Explanation:

<u>Available data</u>:

  • The gene for petal color in a flower has incomplete dominance
  • Two A1 alleles (A1A1) express black color
  • Two A2 alleles (A2A2) express white color
  • One of each allele (A1A2) express mottled color

In a cross between two black flowers, there is no allele A2, there are just two alleles A1. So, the cross is:

Parental)    A1A1    x    A1A1

Gametes)  A1   A1       A1   A1

Punnet Square)     A1         A1

                   A1    A1A1     A1A1

                   A1     A1A1     A1A1

F1 Phenotypes: 100% black flowers

F1 Genotype: 100% A1A1

There are 0% of probabilities of getting a mottled offspring.

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