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stiks02 [169]
3 years ago
15

Mating is rarely random. Many organisms choose a mate for specific reasons - body size, coloration, antler size, feather length,

etc. Changes in allelic frequencies due to this non-randomness of mating is called Question 3 options: Hardy-Weinberg equilibrium. natural selection. genetic drift. gene flow.
Biology
1 answer:
poizon [28]3 years ago
3 0

Answer:

Natural selection

Explanation:

Sexual selection refers to the natural selection where the allele frequencies of a population are changed due to nonrandom mating between the individuals. Certain preferences for the mate by organisms result in sexual selection. It is mostly exhibited by females.

For example, peahen prefers the peacocks with elaborate tail features as their mate. The sexual selection also occurs when there is competition among the members of the same sex for a mate. This type of sexual selection is mostly exhibited by males and results in fighting and display.

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A plant has the genotype AAbbCcDDEeff, where each letter represents a different gene. This plant is crossed with another whose g
scoundrel [369]

Answer:

The fraction of the offspring that will show the phenotype produced by the recessive c allele is 1024/4096 = 0.25 A-BbccDdE-Ff = 25%

Explanation:

You can calculate the fraction of the offspring that will show the phenotype produced by the recessive c allele by making the punnet square for each gene and then multipling the phenotypic proportions, like this:

Cross) AAbbCcDDEeff     x      AaBBCcddEEFF

Cross For each gene by separately:

  • Parental )        AA    x    Aa

       Gametes)  A    A         A    a

        F1)             2/4 AA  

                          2/4 Aa

  • Parental )        bb    x    BB

         Gametes)  b    b         B   b

          F1)                   4/4 Bb

  • Parental )        Cc    x    Cc

        Gametes)  C    c         C    c

         F1)             1/4 CC

                           2/4 Cc

                            1/4 cc

  • Parental )        DD    x    dd

       Gametes)  D    D          d    d

        F1)             4/4 Dd

  • Parental )        Ee    x    EE

        Gametes)     E     e      E     E

         F1)             2/4 Ee

                           2/4 EE

  • Parental )        ff    x    FF

         Gametes)     f     f      F     F

          F1)             4/4 Ff

So, fraction of the offspring that will show the phenotype produced by the recessive c allele is:

4/4 A-  x  4/4 Bb   x   1/4 cc   x   4/4 Dd   x  4/4 E-   x   4/4 Ff =  

1024/4096 = 0.25 A-BbccDdE-Ff =25%  

6 0
3 years ago
Read 2 more answers
Tac cta gcc agt cgg insert a t after the first c
tatuchka [14]

im not sure what you mean by insert a t after the first c, but translated this would be AUG GAU CGG

Hope this helps!

8 0
4 years ago
How does the function of the glottis help the frog survive?
polet [3.4K]

Answer:

This voice box occurs in all amphibians but is anatomically most complex in frogs. The larynx exits into the trachea; the latter bifurcates into the bronchi and then into the lungs. The glottis then opens, and elastic recoil of the lungs forces the pulmonary air out and over the new air in the buccopharyngeal pocket.

Explanation:

4 0
3 years ago
Which of these characteristics BEST describes a difference between eukaryotic and prokaryotic cells?
kumpel [21]

Answer: c

Explanation:

4 0
3 years ago
Changing one base in a gene could have the
saw5 [17]


answer: 2) sequence of building blocks of a protein found in a cell.

Just random FYI:

- it is a mutation, that is generally not looked upon as being severe or detrimental to the person

-by changing the base by either adding or deleting from a protein strand will cause the protein to be useless

-frameshift mutation deals with DNA sequence being shifted. For example: a DNA strand looks like a ladder. If one of the rungs on the ladders gets skipped and the next ladder rung gets the code that the previous rung should have gotten, then that is what a frameshift mutation is. Hopefully that makes sense. It's easier to explain if there was a picture.

there are other types of mutation but I won't get into them.


Hopefully this helped and good luck.

5 0
3 years ago
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