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Nookie1986 [14]
3 years ago
6

Please help. As an experiment a science class puts vinegar and baking soda into a large bottle and then puts a cork in the bottl

e. The carbon dioxide from this mixture shoots the cork into the air. What kind of energy transformation takes place in this experiment?
Question 8 options:


thermal energy to electrical energy


radiant energy to thermal energy


chemical energy to kinetic energy


mechanical energy to chemical energy
Biology
1 answer:
9966 [12]3 years ago
7 0
Chemical energy to kinetic energy
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In mendelian genetics, genetic characteristics that are not expressed in an organism are said to be
Reika [66]
Gregor Mendel laid the groundwork for the science of genetics by developing his Mendelian inheritance, which <span> is a type of biological inheritance.</span><span>
In Mendelian genetics, genetic characteristics that are not expressed in an organism are said to be nondominant. 
</span><span>In contrast those genetic characteristics that are expressed in an organism are said to be dominant.
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3 0
3 years ago
How does the expression of Delta on the surface of a cell activate the expression of certain genes in the nucleus of its neighbo
irina1246 [14]

Answer:

Delta binds to the Notch receptor and this binding produces the cleavage of its intracellular domain, which subsequently enters into the cell nucleus to bind with a repressor in order to activate the transcription

Explanation:

The Notch signaling pathway is initiated when Notch receptors on the cell surface bind to the Delta ligand, which activates Notch signaling in cells next to it. In the receiving cell, Delta–Notch binding triggers the cleavage of the Notch intracellular domain called Nic (intracellular Notch). Subsequently, Nic enters into the cell nucleus where it releases repression on Suppressor of Hairless (Su(H)) class transcription factors, thereby activating the transcription of target genes.

7 0
2 years ago
CREATING PUNNETT SQUARES FOR THE FISHER FAMILY There are six people in the Fisher family. Olivia and Marcus are the parents. The
trasher [3.6K]
Really, there are multiple questions all rolled into one.I will try to answer them patiently and systematically.
First summarize data.
A. Neither Olivia nor Marcus have freckles (recessive, ff)
B. Both are heterozygous for the hairline trait (dominant Ww)
C. Neither Marcus nor Olivia can roll their tongues (rr).
D. All four children have dimples (dominant Dx)
E. Both Olivia and Marcus are EE (unattached earlobe trait).
F. Marcus can not detect the bitter taste (pp for PTC gene)Olivia has been found to be able to detect the bitter taste, but she is heterozygous for the trait. (Pp for PTC gene)

A. Freckles, F (Dominant)
"Neither Olivia nor Marcus have freckles" =>
both have genotype ff.
None of the children have freckles (i.e. P(F)=0% for freckles in all children)

B. Widow's Peak, W (dominant)
"Both are heterozygous for the hairline trait"
So both have genotype Ww.
Punnett square
       W    w 
W WW Ww
w Ww   ww
Since W is a dominant trait, only ww (25%) will have straight hairline, 75% will inherit the widow's peak. 
50% of the children will be homozygous (Ww).

C. Rolling tongues, R  (dominant)
"Neither Marcus nor Olivia can roll their tongues" 
means that both are homozygous recessive, with genotype rr.As in freckles, all children will have genotype rr, so none of them will roll their tongues. 
None will be heterozygous.  The whole family's genotype is rr.


D. Dimples, D (dominant)
"D. All four children have dimples"
implies that all children have genotype DD or Dd.
It is likely that at least one parent has genotype DD in order to have 100% of children have DD or Dd.Here are some possibilities

Case 1: DD + DD (both homoozygous dominant)
     D   D   
D DD DD
D DD DD
Phenotype: 100% have dimples

Case 2: DD + Dd (one homoozygous dominant, and other heterozygous) 
     D  d
D DD Dd
D DD Dd
Phenotype: 100% have dimples

Case 3: DD + dd (one homoozygous dominant, and other homozygous recessive) 
    D    D
D DD DD
d Dd Dd
Phenotype: 100% have dimples

Case 4: Dd + Dd (both heterozygous) 
      D  d
D DD Dd
d Dd dd
Phenotype: 75% have dimples, 25 do not.Note: all 4 children could have dimples, with probability 31.6%

Case 5: Dd + dd (Heterozygous + homozygous recessive)
     D  d
d Dd dd
d Dd dd
Phenotype: 50% have dimples, 50 do not.Note: All four children could have dimples, with probability 6.25%.

Case 6: dd + dd (Both homozygous recessive)
   D   d
d dd dd
d dd dd
Phenotype: all children have no dimples.
Conclusion:Likely genotypes of parents: DD+DD, DD+Dd, DD+dd
Possible genotypes of parents: Dd+Dd, Dd+dd
Impossible genotype of parents: dd+dd
Therefore we know with certainty that at least one of the parents has dimples.

E. Unattached Earlobe trait, E (dominant)
"Both Olivia and Marcus are EE"
(i.e. unattached earlobe trait).
This means that the whole family will have genotype EE, i.e. all are homozygous dominant, and have unattached earlobes.

F. Bitter taste, P  (incomplete dominance)
"Marcus can not detect the bitter taste (pp for PTC gene)
Olivia has been found to be able to detect the bitter taste, but she is heterozygous for the trait. (Pp)"
     P   p
p Pp pp
p Pp pp
Probability for each single child being able to taste the ptc paper is 1/2.
Probability for all children being able to taste the ptc paper is (1/2)^4=1/16.
If Violet cannot taste the ptc paper, her genotype is pp.
We do not know for sure how many of the children can taste the ptc paper. 
The most like situation is only half of them can taste, so do the parents.  Therefore, half of the family can taste the ptc paper.


Finally, as to "please answer it correctly", I believe I did.  :)


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