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VladimirAG [237]
3 years ago
5

Why is the lower epidermis of zebrina a complex tissue

Biology
1 answer:
NemiM [27]3 years ago
3 0
This is just an educated guess. As the purple pigment, caused by anthocyanins, are on the bottom side of the plant, their purpose could probably be to direct the light. Specifically, a purple pigment on the bottom of the plant would absorb certain wavelengths near the purple spectrum, and reflect other wavelengths back toward the portion of the plant with chlorophyll. In this way, light does not simply pass through the leaf, instead it is reflected back in towards the chlorophyll to maximize the amount of light being used for photosynthesis.
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I thinkkk that is D!!!
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1. ¿Qué es la sociedad civil? ¿Quiénes la conforman? ¿Por qué es importante para la democracia?
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Answer:

La sociedad civil también se llama tercer sector de la sociedad.

Explicación:

La sociedad civil es un tipo de sociedad que se compone de personas que exigen los derechos y deseos del público. También se le llama tercer sector de la sociedad porque es diferente del sector gubernamental y empresarial. Las personas del sector familiar y privado conforman la sociedad civil. Es importante para la democracia porque proporciona control y equilibrio sobre la democracia y evita que el gobierno tome malas decisiones.

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2 years ago
When is cytokinesis complete
Mazyrski [523]

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c

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when two daughters of cells are produced

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3 years ago
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vodka [1.7K]

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7 0
3 years ago
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In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. Allele D produce
FinnZ [79.3K]

Answer:

C)Parental: 41% Dr, 41% dR; recombinant: 9% DR, 9% dr.

Explanation:

The notation Dr/dR for genotypes means that one homologous chromosome has the alleles Dr and the other homologous chromosome has the alleles dR.

The heterozygous plant  Dr/dR will produce 4 types of gametes: two identical to the chromosmes the individual has in its somatic cells (called parental), and two gametes which will be a mix of the alleles in the homologous chromosomes (called recombinant).

  • Dr: parental
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  • DR: recombinant
  • dr: recombinant

To calculate the frequency of each type of gamete, we must use the formula:

Distance (map units) / 100 = frequency of recombination.

18 mu / 100 = 0.18.

The total frequency of recombination between the genes D and R is 0.18, but every time crossing over happens, two recombinant gametes are generated. Therefore, each recombinant gamete will have a frequency of 0.18/2=0.09 = 9%.

The frequency of parental gametes will be:

1 - frequency of recombinant gametes

1 - 0.18 = 0.82

But there are 2 parental gametes, so each of them will have a frequency of 0.82/2=0.41 = 41%.

6 0
3 years ago
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