Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
which class question is this?
Answer:
Explanation:
The homozygous yellow seeds will be represented by AA and homozygous white plant will be bb (Therefore green seeds will be a and purple flowers B). So using a punnet square, the cross would be AAbb x AaBb
Answer: 400 million years old
The lytic cycle of a virus involves the death of host cells, while the lysogenic life also involves attachment, entry and integration but it does not cause the death of host cells.
<h3>What are the lytic cycle and the lysogenic cycle of a virus?</h3>
The lytic cycle and the lysogenic cycle of a virus represent different adaptive mechanisms to perpetuate that viruses have, which may involve the death of the host cell as occur in the lytic cycle.
The phases of the lytic cycle in viruses include:
- Attachment and entry
- Transcription of the viral sequence
- Maturation
- Lysis of the infected bacteria
The phases of the lysogenic cycle in viruses include:
- Attachment, entry
- Genome integration
- Maturation of the viral components
- Cell division
The host cells die in bacteriophages after the lytic cycle, while they may survive or not (it depends on the manipulation of the hots cel's molecular machinery) after the lysogenic cycle.
Therefore, with this data, we can see that the lytic cycle and the lysogenic cycle of a virus are distinct in the sense that the lysogenic cycle does not involve the death of host cells.
Learn more about the lytic cycle and the lysogenic cycle here:
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Answer:
The correct answer will be option-B
Explanation:
An allele is the variable form of a gene which determines the characteristic or trait of an organism.
The gene exists in many or multiple forms in an organism where each form is known as the allele. These forms usually occur on the same locus or position of the chromosome on chromosomes in pairs.
During fertilization, allele controlling a single trait of an organism from male and female gamete fuse and shows its effect by producing a phenotype of the organism.
Thus, Option-B is the correct answer.
