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kari74 [83]
2 years ago
5

I need help answering this question

Biology
1 answer:
KatRina [158]2 years ago
4 0

Answer:

phenotypic ratio is 3:1

and genotypic ratio is 1:2:1

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Which statement correctly describes a characteristic that a scientific
RideAnS [48]

Answer: Option A.

Explanation:

Scientific measuring tools refers to the equipments or tools use to measure quantities in science examples include measuring cup, measuring cylinder, e.t.c.

The characteristic that describe Scientific tool is that To be accurate, it must be able to make measurements repeatedly over a long period of time because accuracy is how close the measurements for a value is to the correct value and it must take measurements for long period of time without errors.

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3 years ago
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What would you say to people who deny global warming just because it shows in the<br> wintertime
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i would probally ask them why they dont think its real. I would honestly try to understand. And then i would show them graphs (online of course) about how its affecting the planet and if they still dont listen id probally just fight them

Explanation:

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2 years ago
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Two autosomal genes, J and K, are 60 map units apart. You perform the following testcross: J K / j k x j k / j k. At what freque
Dmitry [639]

Answer:

  • J K / j k = 20%
  • j k / j k = 20%
  • J k / j k = 30%
  • j K / j k = 30%                

Explanation:

To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cm. And that the maximum recombination frequency is always 50%.

The map unit is the distance between the pair of genes for which every 100 meiotic products, one of them results in a recombinant one.

So, en the exposed example:

  • J and K are autosomal genes
  • J and K are separated by 60 M.U.
  • 60 M.U. means that there is 60% of recombination.

Cross)             J K / j k                    x                  j k / j k

Gametes) JK  Parental                                     jk, jk, jk, jk

                jk   Parental                                  

                Jk   Recombinant                          

                 jK   Recombinant

One map unit equals 1% of recombination frequency. This means that every 100 meiotic products, one of them is a recombinant one.

1 M.U. -------------- 1% recombination

60 M.U. ------------ 60% recombination

                              30% Jk  +  30% jK

100 M.U. - 60 M.U. = 40 M.U.

40M.U.--------------40 % Parental (Not recombinant)

                            20% JK   +   20% jk

Punnet Square)           JK       jk      Jk      jK

                          jk     JK/jk   jk/jk   Jk/jk   jK/jk

J K / j k = 20%

j k / j k = 20%

J k / j k = 30%

j K / j k = 30%                                

3 0
3 years ago
Improved functional health can be a positive influence on which health risk/
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3 years ago
What types of adaptations would be needed by organisms that live in a river.
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If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)

Hope this helps!
8 0
3 years ago
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