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Free_Kalibri [48]
3 years ago
11

An object with a mass of 2.0 kg has a force of 4.0 Newtons applied to it. What is the resulting acceleration of the object?

Biology
1 answer:
Verizon [17]3 years ago
8 0

Answer:

a = 2m/s^2

Explanation:

Newton's second law:

F = ma

4N = 2kg * a

4N/2kg = a (divide both sides by 2kg)

2m/s^2 = a

Hope this helps!

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Imagine that a couple is planning to have children. The male is heterozygous for tongue rolling and homozygous dominant for unat
Amiraneli [1.4K]

Answer:

 

F1 generation:         RrUu, rrUU, rrUu, RrUU

                               25% : 25%: 25%: 25%

Ratios

  • genotype:              1: 1: 1: 1   ...(from punnet square)
  • phenotype:               1 : 1

Explanation:

Punnett squares are a diagrammatic way of deciding the characteristics of hybrid offspring created by crosses in genetic breeding. Parental genotypes and phenotypes are widely recognized, and all usually obey normal Mendelian ratios and inheritance.

Mendelian genetics focuses on the origin or heritability of characteristics. Such traits are packed into one's own gamete, acquired by themselves, and sometimes display superiority, where one's impact can mask those of another trait.

These are called the Law of Segregation, Independent assortment and Dominance respectively.

For this cross...  Assuming:

Unattached lobes= dominant

  • Rolling tongue= dominant
  • Parent generation or P generation:

Gametes:

R → rolling dominant (R), non-rolling recessive (r)

U → unattached dominant (U), attached recessive (u)

P generation:                          RUrU× rUru

                       rolling, unattached  × non-rolling, unattached

F1 generation:         RrUu, rrUU, rrUu, RrUU

                               25% : 25%: 25%: 25%

Ratios

  • genotype:              1: 1: 1: 1   ...(from punnet square)
  • phenotype:               1 : 1

<em><u>Half the offspring have unattached lobes and can roll their tongues while the other half have unattached lobes and cannot roll their tongues...</u></em>

Each punnet cross is attached below

6 0
3 years ago
A. Changes taking place in an individual organism can be passed to offspring.
Volgvan

Answer:

A- Changes taking place in an individual organism can be passed to offspring.

Explanation:

7 0
2 years ago
Read 2 more answers
The human body regularly secretes this amount of sweat per day to rid itself of metabolic wastes
erastovalidia [21]
1 quart per day is the average.
4 0
3 years ago
In which cellular organelle do the three posttranscriptional modifications often seen in the maturation of mrna in eukaryotes oc
Mamont248 [21]

Answer:

Nucleus

Explanation:

Eukaryotic RNAs are synthesized in the form of precursors that will have to undergo a modification process in order to be functional. Prokaryotic mRNAs do not need to be modified after being synthesized and are linear with respect to the gene from which they were synthesized. That is, they are completely complementary. As for the prokaryotic rRNA and tRNA, the modifications they suffer are simple because they have to do with the cuts that the long precursor will suffer in which both species are included. However, eukaryotic mRNA, rRNA and tRNA, which are synthesized in the cell nucleus and nucleolus and subsequently used in the cytoplasm, need to undergo much more complex modification processes, not only to be functional but to be able to pass through the small nuclear pores to the cytoplasm. The objective of this conference is precisely to describe these post-transcriptional modification processes.

Modification at the 5 'or Cap 5' end

The 5 'end of the mRNA is modified in the eukaryotic nucleus (but not in the mitochondria or chloroplasts). Modification reactions are probably common in all eukaryotes. Transcription begins with a nucleoside triphosphate (almost always a purine, A or G). The first nucleotide retains its 5 'triphosphate group and forms the usual phosphodiester bond from its 3' position to the 5 'position of the next nucleotide.

Modification of the 3 'end or Poly Tail (A)

Most eukaryotic mRNAs have a polyadenyl acid sequence at the 3 'end. This terminal stretch of waste A is often described as Poly (A) tail and the mRNA with these characteristics is called poly (A) +. The poly (A) sequence is not encoded in the DNA, but is added to the RNA in the nucleus after transcription. The addition of poly (A) is catalyzed by the enzyme poly (A) polymerase, which adds ~ 200 residues of A to the free 3'-OH end of the mRNA.

Nuclear splicing

Splicing occurs in the nucleus, along with the other modifications that the newly synthesized RNA undergoes. The transcript obtains its cap at the 5 'end, loses its introns and is polyadenylated at the 3' end. Then the RNA is transported through the nuclear pores to the cytoplasm where it will be available for translation.

3 0
3 years ago
In rabbits, short hair(S) is dominant over long hair(s). What genotype and phenotype ratios are expected from a cross between tw
SOVA2 [1]

Answer:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair          3/4

ss                  1/4          Long hair          1/4

Explanation:

Both are heterozygous for the trait so we can expect that the cross would be:

Ss x Ss

    S     s

S  SS   Ss

s   Ss   ss

So the resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair:  1/4

So in summary:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair        

ss                  1/4          Long hair          1/4

5 0
3 years ago
Read 2 more answers
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