A wild-type fruit fly exhibits the most common phenotype in the population.
Fruit flies of the wild type are yellow-brown in colour with brick-red eyes and longitudinal black rings across the abdomen.
An organism or strain displaying the wild type is one that has a phenotype, genotype, or gene that predominates in a natural population of organisms or strain of organisms as opposed to that of naturally occurring or laboratory mutant forms.
The genotype and phenotype standards of reference are wild type. Wild type is regarded as the norm and neither the dominant nor the recessive. In compared to the wild type, mutant alleles are either dominant or recessive.
Fruit flies are distinguished by their tiny size, brown bodies, and red eyes. While these pests themselves are not harmful, they may be a sign of unclean living conditions in the home.
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Answer: The type of ecosystem service these plants provide is PROVISIONING SERVICES.
Explanation:
Ecosystem services is defined as the activities that occurs in an ecosystem which directly or indirectly enhance the well being of humans. They are grouped into four different categories which include:
--> Regulating services
--> cultural services
--> supporting services and
--> provisioning services
The PROVISIONING SERVICES obtained from the ecosystem are any benefits or products that can be gotten from nature. These include:
--> food
--> drinking water
--> wood fuel
--> natural gas
--> medicinal resources (gotten from herbal plants which can be used to manufacture drugs for cancer treatments).
Because sugar in fruits is good for you but artificial sugar isn’t healthy for you
There will be an error in the DNA code
<h2>Given statement is false</h2>
Explanation:
According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA
Meselson and Stahl did an experiment on DNA replication using E.coli bacteria
- E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
- It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
- Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
- They then measured the density of the DNA using density gradient centrifugation
- This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
- Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
- Each DNA strand act as a template for synthesis of new strand
- Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment
