Even though humans don't have tails or gills, they are still chordates; why is this so?
What will be an ideal response?
During development, human embryos have both gill slits and a post-anal tail. Even though these characteristics are lost in adults, because they existed at one point during development, humans are classified as chordates.
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Which of the following is not an accurate description of events leading to the lytic pathway following viral infection in a bacterium?
A. Upon infection, the linear bacteriophage DNA forms a circle and transcription is initiated from promoters PL and PR. B. The transcripts from PR encode the proteins cro and cII. C. The cro protein represses transcription from PM so that the cl protein is not transcribed. D. Strong protease activity rapidly degrades cII, and cro continues to repress cI expression, leading to the lytic path. E. Reduced protease activity due to poor conditions allows cII to accumulate, which then stimulates transcription from PE and thus expression of cI.
The process by which genetic material is exchanged between different species, such as an endosymbiont and its host, is:
A. vertical gene transfer B. horizontal gene transfer C. binary fission D. mutualism E. parasitism
How would this image be different if the individual were male?
1.There would be only one X chromosome.
2.There would be 24 pairs of chromosomes.
3.There would be three 21st chromosomes.
4.It would not be any different.
What would slow the death rate of microbes
What will be an ideal response?