The answer is B. <span>hairy stems (dominant).
</span>If:
H - the dominant allele for hairy stems,
h - the recessive allele for non-hairy stems,
then:
HH - dominant homozygote with hairy stems,
Hh - heterozygote with hairy stems,
hh - recessive homozygote with non-hairy stems.
In autosomal dominant traits, the phenotype is
present if both copies of the dominant allele (H) are present (homozygous
individuals HH) or only one copy of the dominant allele is present
(heterozygous individuals Hh).
In this case all of the batch of tomato plants were <span>heterozygous individuals Hh with hairy stems:
</span>
Parental generation: HH x hh
F1 generation: Hh Hh Hh Hh
I believe that the answer to the question provided above is that the <span> time frame is considered rapid environmental change is the modernization period.</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
1. Dysentery caused by <em>Shigella dysenteriae</em><em> </em>is isolated using MacConkey Lactose agar and Xylose Lysine agar
2. Antibiotic associated diarrhea caused by <em>Clostridium difficile</em> (detection of toxin) is isolated using <em>Clostridium difficile</em> selective medium
3. Dermatophyte infection in the nails is isolated using potatoes dextrose agar
4. Dengue fever by immune response is isolated using minimal essential medium (MEM)
1. Dysentery caused by <em>Shigella dysenteriae</em>
- Collection of fecal specimens and poultry (100) fecal samples collected from were processed according to published protocols.
- Streak one loopful of fecal sample on MacConkey Lactose Agar (MLA) and Xylose Lysine agar
- Incubated at 37 C for 24 hours
- The MLA plates showing the presence of convex and colorless colonies are considered for further identification.
- Similarly, the XLD plates showing appearance of presence of translucent or red colored colonies are taken for further identification.
2. Antibiotic associated diarrhea caused by <em>Clostridium difficile </em>(detection of toxin)
- Mix equal parts of industrial absolute alcohol and the fecal specimen.
- Homogenize using a vortex mixer.
- Leave at room temperature for 1 hr.
- Inoculate on <em> </em><em>Clostridium difficile </em>Selective Agar
- Incubate at 37ºC in a conventional anaerobic gas jar
- Observe after 24-48 hours in anaerobic environment .
- Use gram stain reagent and Malachite green for morphological study.
- Observe positive bacillus cell shape with single or chains(2-6)cell and sub terminal endo spore forming after gram staining
3. Dermatophyte infection in the nails
- Prepare potatoes dextrose agar (PDA)
- Collect clippings from the nail with a sterile scalpel after carefully washing the site with 70% alcohol.
- Dissolved in two drops of 10% KOH on a glass slide, if the sample is thick, use 20% KOH
- Heat the slide few seconds over a spirit lamp, do not allow to boil.
- Observe preparation under a low power of the microscope in reduced light.
- Look out for presence of mycelia fragments and the distribution of spores inside.
4. Dengue fever by immune response
- Dilute blood samples in minimal essential medium (MEM) containing 2% fetal bovine serum (FBS)
- Add diluent to a cultured monolayer of C6/36 cells for 1 hour with gentle rocking in a 28 °C CO2 incubator.
- After 1 hour, remove the inoculum and cells
- Culture for 7 days in MEM with 2% FBS and antibiotics.
- Collect culture supernatant on day 7 and infect a new batch of C6/36 cells
- Repeat the procedure three times to achieve passage 3 (P3) isolates.
Learn more about culturing of microorganisms here:
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Near point refers to the closest distance on which the eye can focus. So any activity where your eyes are focusing hard on the object right in front of you could be considered important when it comes to near point. Some of those activities could be reading, using the microscope, sewing, etc.
Answer:
here is your answer
Explanation:
Much of the energy, estimates suggest from 60% to 70%, is used to power transport mechanisms that maintain the Na+-K+ membrane potential required for the transmission of the nerve impulses. The brain must also synthesize neurotransmitters and their receptors to propagate nerve impulses.