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Murljashka [212]
3 years ago
15

________ are cells that make up the brain and spinal cord and transmit electrical signals from receptor to effectors.

Biology
1 answer:
Dafna11 [192]3 years ago
3 0
I think the answer here is neurons, the nerve cells
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ou are given two true-breeding groups of rabbits. The first group has floppy ears and white fur. The second group has straight e
Lena [83]

Answer:

you expect to see that 75% of your F2 generation rabbits have floppy ears and 25% of your rabbits have black fur.

Explanation:

<u> Available data:</u>

  • Two true-breeding groups of rabbits.
  • The first group has floppy ears and white fur.
  • The second group has straight ears and black fur.
  • 100% of the F1 generation has floppy ears and gray fur.
  • Each of these traits is determined by a single gene and undergo independent assortment.

Having this information we can infer that floppy years, expressed by F allele, might be dominant over straight ears, expressed by f allele. And that the fur color is affected by incomplete dominance, being B the allele expressing black color, b the allele expressing white color and Bb the genotype for grey color.

Incomplete dominance is a condition where neither of the alleles completely dominates over the other one. Descendents possess an intermediate phenotype between the two parental phenotypes and not the dominant one.

Cross between groups

Parental)  FFbb   x   ffBB

F1)                    FfBb

<u>Cross for the ear traits:</u>

Parental)  Ff    x    Ff

Gametes) F  f    F   f

Punnet square)    F       f

                  F      FF      Ff

                  f       Ff      ff

F2) 75% of the progeny have floppy ears, FF and Ff

      25% of the progeny have straight ears, ff

<u>Cross for the fur color traits</u>:

Parental)  Bb     x     Bb

Gametes) B   b     B    b

Punnet Square)     B      b

                       B    BB    Bb

                       b    Bb    bb

F2) 25% of the progeny have black fur, BB

     50% of the progeny have grey fur, Bb

      25% of the progeny have white fur, bb

               

6 0
3 years ago
Reproduction for dolphins and badgers and people is more complicated because
Lynna [10]

Answer:

B. have to find a partner

Explanation:

Reproduction for dolphins and badgers and people is more complicated because, it has to find a partner.

6 0
3 years ago
Which option accurately describes the first two stages of photosynthesis?
DaniilM [7]
The answer is <span>Stage 1: The thylakoid captures light energy. Stage 2: Chlorophyll converts it to chemical energy.

</span><span>Photosynthesis is a process in which plant produce sugar and oxygen from water and carbon dioxide using the energy of sunlight. Cells of the green leaves contain chloroplasts. </span><span>Thylakoids are the part of chloroplasts where the light-dependent reactions of the photosynthesis occur. They capture light energy, so chlorophyll inside the chloroplast can convert it to chemical energy.


</span>
4 0
3 years ago
Read 2 more answers
Trains have developed over the years as technology has improved. Now, there are electronic trains that do not need conductors to
seropon [69]

Answer:

they tend to run more smoothly and on schedule;

not having a human on board to deal with unexpected problems

Explanation:

I just had the same one

7 0
2 years ago
Select all the correct answers. which two statements about composite materials are true? they’re made up of more than one substa
Dima020 [189]

Correct Statements are -

  • They’re made up of more than one substance.
  • They’re readily available in nature.
<h3>What are Composite Materials?</h3>
  • Composite materials are created by combining two or more substances with dissimilar properties.
  • Composite materials have distinct properties that distinguish them from their constituents, and the constituents can be easily distinguished within the composite materials because they do not blend together.
  • Some composite materials are abundant in nature. Wood, for example, is a composite material made up of cellulose and lignin.

To learn more about Matter from the given link

brainly.com/question/1738648

#SPJ4

3 0
2 years ago
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