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sertanlavr [38]
3 years ago
5

Why does the rotation of earth require people to establish time zones?

Biology
2 answers:
Stolb23 [73]3 years ago
5 0
The Earth rotates constantly and is exposed to the sun in different intervals & time periods - Thus, people<span> need to establish a time zone to state when & where the sun rises as well as sets during daytime. </span>
Sladkaya [172]3 years ago
4 0
The Earth rotates constantly and is exposed to the sun in different intervals & time periods - Thus, people need to establish a time zone to state when & where the sun rises as well as sets during daytime. <span>
</span>
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Different ratios occur in crosses with single gene pairs or two gene pairs. What types of ratios are likely to occur in crosses
likoan [24]

Answer:

Genotype ratio: 1, 1:1, 1:2:1

Phenotype ratio: 1, 3:1

Explanation:

Single gene pair cross is also known as monohybrid cross. This means that only one gene usually with two alleles is observed and it express one trait.

For example, if we name the gene for a certain trait with A, the possible genotypes are AA (dominant homozygous), aa (recessive homozygous) and Aa (heterozygous). Possible crosses are:

P: AA  x  AA

F1 : all of them are AA

The same is with aa x aa (all of the offspring are with aa genotype)

P: AA  x  Aa

F1: AA Aa AA Aa  (genotype ratio 1:1) (phenotype ratio 3:1)

The same genotype ratio is  in aa x Aa (offspring will have aa Aa aa Aa-(genotype ratio 1:1) (phenotype ratio 1:1)

P: Aa x Aa

F1: AA Aa Aa aa (genotype ratio 1:2:1) (phenotype ratio 3:1)

P: AA x aa

F1: Aa Aa Aa Aa (1)

5 0
3 years ago
Is glucose aversion a learned response, or is it inherited?
Keith_Richards [23]
<span>Rather than being learned, glucose aversion is inherited as an autosomal incompletely dominant trait, which appears to he controlled by a single major gene. This was discovered through a study done on cockroaches, some were fed regular bait while some were fed bait laced with glucose. Through time they began to avoid the glucose.</span>
3 0
3 years ago
In southern Arizona, in the Chiricahue Mountains, there are species of toads that live aciya
inysia [295]

Answer:

<em>Geographic isolation</em>

Explanation:

Geographic isolation can be described as a term that describes the model of speciation in which a biological population becomes isolated from other members of the population and can no longer have gene flow with them.

The same scenario of gene isolation is occurring in the species of taods which live at the top of the mountains in southern Arizona. This population has become reproductively isolated fro all other species of toads within the mountain range.

5 0
3 years ago
What occurs in the light independent reactions?
baherus [9]

Answer:

Light energy is harnessed in Photosystems I and II, both of which are present in the thylakoid membranes of chloroplasts. In light-independent reactions (the Calvin cycle), carbohydrate molecules are assembled from carbon dioxide using the chemical energy harvested during the light-dependent reactions.

Explanation:

5 0
2 years ago
What is the role of oceans in the carbon cycle?
elixir [45]

Answer:The ocean plays a critical role in carbon storage, as it holds about 50 times more carbon than the atmosphere. Two-way carbon exchange can occur quickly between the ocean's surface waters and the atmosphere, but carbon may be stored for centuries at the deepest ocean depths.

Explanation:

5 0
2 years ago
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