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Harrizon [31]
3 years ago
9

Why are scientific theories changed but never thrown away?

Biology
1 answer:
faltersainse [42]3 years ago
3 0
They are like that because they can't always be faulty and may have at least some spark of truth to this theory also as stated earlier a theory in scientific terms is just an observation so it can't really be turned down hence theory.
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In genetics, the dash symbol (-) is a "wild card" that stands for either the dominant allele or the recessive allele; for exampl
m_a_m_a [10]

Answer:

12 : 3 : 1

Explanation:

According to Mendel's principles, a dihybrid cross between two heterozygous summer squash parents (WwGg X WwGg) should yield offsprings, 12 with white, 3 with yellow and  1 with green color phenotype. The classic Mendelian phenotypic ratio for dihybrid cross is 9:3:3:1. In this case, genotypes W- G- and W- gg produce white color phenotype. This is because we have 12: 3: 1 phenotypic ratio in which the alleles of two different genes assort independently into gametes.

<em>Dihybrid cross for heterozygous summer squash:</em>

                    WG         Wg            wG            wg          

    WG      WWGG   WWGg     WwGG     WwGg

    Wg       WWGg   WWgg     WwGg      Wwgg

    wG        WwGG    WwGg     wwGG      wwGg

      wg       WwGg    Wwgg     wwGg        wwgg

   Genotypes:

   W-G-  and W- gg  = white = 12

    ww G- = yellow = 3

     ww gg = green = 1

3 0
3 years ago
he x-ray film shows a fracture where one side of the cortex is intact and flexed and the other side has signs of interruption (f
KatRina [158]

Answer:

This is refers to as Greenstick fracture.

Explanation:

This is the type of fracture common in children less than 10 years, in which there is incomplete fracture of the bone,with ,but  the cortex  remain flexed.It is called green stick because it is analogous to the act of breaking  a branch of a tree, which is not completely broken, from the main branch.

It is usually to due to falls,and common in kids because of their soft bones which is not completely formed and therefore will not break off completely like that of adults when fractured, but only from one side only.

3 0
3 years ago
In easy steps describe protein synthesis
Goryan [66]
<span>The synthesis of proteins takes two steps: transcription and translation. Transcription takes the information encoded in DNA and encodes it into mRNA, which heads out of the cell's nucleus and into the cytoplasm. During translation, the mRNA works with a ribosome and tRNA to synthesize proteins.</span>
4 0
3 years ago
Eukaryotic cells are compartmentalized into ____________ , which is not characteristic of prokaryotes. the chromosomes of eukary
likoan [24]
The first blank is organelles, the second blank is nucleus, the third blank is eukaryotes, the fourth blank is mitochondria, and the fifth blank is flagella.

Hope this helped!!
5 0
3 years ago
At an intercalated disc, At an intercalated disc, the cell membranes of two cardiac muscle fibers are completely separated by a
Aloiza [94]

Answer:

The correct answer is " two cardiac muscle cells are connected by gap junctions".

Explanation:

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3 years ago
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