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Reptile [31]
3 years ago
15

Which is a binary star ?

Biology
2 answers:
zmey [24]3 years ago
6 0
A binary star is a star system consisting of two stars orbiting around their common barycenter.
yanalaym [24]3 years ago
5 0
A system of two stars in which on star revolves around the other
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Assuming a typical monohybrid cross in which one allele is completely dominant to the other, what phenotypic ratio is expected i
IgorC [24]

Answer:

Assuming the dominant allele is represented as A, and the genotype as AA and the recessive as a, and genotype as aa; then the F1 will produce the offispring. Aa, Aa, Aa,Aa in ratio: 1:1:1:1:1

This shows the dominance of allele A.

However if two of  the F1 generation are crossed then:

The  F2 is AA,Aa,Aa,aa the phenotypic ratio is

                        3   ;     1

W<u>hile the Genotypic ratio is ratio;</u>

<u>   1AA : 2Aa Aa; 1aa(1 ;2;1)</u>

Explanation:

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What does it mean to be in the path of totality?(1 point)
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Option B You are on part of Earth that is in the umbra of the moon’s shadow

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Solar eclipses are observable in the shadow zone created by the Moon's occultation of the Sun. In the case of a total eclipse and only in this one, the shadow zone where it is possible to observe this phenomenon of total eclipse is called “path of totality“.

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Soil formation would take place most rapidly with the weathering of_________
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D is the correct anwser
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To which of the following environmental changes are populations most able
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In the Calvin cycle more atp than nadph is used how is this difference made up
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Explanation:

The detailed description of photosynthesis is that chlorophyll a becomes oxidized chlorophyll a after being irradiated, and the water in the thylakoid is oxidized by oxidized chlorophyll a to form oxygen and hydrogen ions, and hydrogen ions pass through the class. The ATP synthase on the capsule membrane passes through the membrane into the chloroplast matrix, where it provides a certain chemical potential (ie, an energy produced from a high concentration to a low concentration), and then ADP and Pi on the membrane. Will get energy to form ATP; and NADPH+ is the front chlorophyll a is oxidized by light to release high-energy electrons e, e will be transferred to NADP+ (oxidized coenzyme II), the photolysis of the front water does not produce hydrogen ions? This led to the combination of NADP and H+, which became NADPH.

Next, their use, in front of the photoreaction, in the dark reaction, CO2 will react with the five-carbon compound in the chloroplast matrix, fixed to the formation of a three-carbon compound (one C in CO2, five C in five-carbon compound, Two three-carbon compounds are formed, and then ATP and NADPH supply hydrogen, respectively, and then return to ADP+Pi and NADP+, and the reduced three-carbon compound becomes organic (mostly sugar) and becomes The five-carbon compound will react with CO2 again, which is the Calvin cycle.

<em>Genetic mutation is an important factor that contributes to the pathogenesis and development of Alzheimer’s disease (AD). The genetic factors studied include the dominant mutations of genes encoding amyloid-β precursor protein (APP), presenilin 1 (PSEN1), and presenilin 2 (PSEN2). Additionally, more and more genes have been found to be potentially associated with AD, such as apolipoprotein E (APOE), glycogen synthase kinase 3 beta (GSK3B), dual specificity tyrosine-phosphorylation-regulated kinase 1A (DYRK1A), and Tau. Although many studies on the treatment of AD have not been successful, gene therapy is still considered as a potential way against AD, and some gene-therapy-based therapeutics have entered the clinical trial stage. Existing strategies for gene therapy against AD include gene inactivation, genetic modification, and immunoregulation, etc.</em>

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