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Elis [28]
4 years ago
9

Positive and negative environmental stimuli that motivate behavior are calledA)needs.B)incentives.C)instincts.D)drives

Biology
1 answer:
Lady_Fox [76]4 years ago
5 0

Answer:

(D.) Drives

Explanation:

The idea that a physiological in a positive and negative environmental stimuli that motivate behavior creates an aroused tension state (a drive) that motivates an organism to satisfy the need for glucose.

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If changes in a genes' DNA sequence can change proteins, which of the following statements is false?
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ProblemAssume that long fingers are inherited as a recessive trait with 80% penetrance. Two people heterozygous for long fingers
Natalka [10]

Answer:

The probability that their first child will have long fingers is 20%  

Explanation:

<u>Available data</u>:

  • long fingers are inherited with 80% penetrance
  • L represents the dominant allele for short fingers
  • l represents the recessive allele for long fingers

Cross) Two people heterozygous for long fingers mate

                            Ll          x         Ll

Gametes)    1/2 L    1/2l         1/2L    1/2l

Punnet Square)  

                               L         l

                     L      LL      Ll

                       l     Ll       ll

F1) 25% or 1/4 LL

     50% or 1/2 Ll

     25% or 1/4 ll

Long fingers are inherited with 80% penetrance, which means that 80% is the proportion of the population that expresses the phenotype long fingers. Hence, the probability that the first child in this cross will have long fingers is:

100% ------- 80%

25% -------- X = 20%  

6 0
3 years ago
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