15×3=45 because p=m.v so simply finish this question.
Answer: metaphase
Explanation:
The failure of sister chromatids to separate during meiosis II occurs in metaphase stage. This is called as nondisjunction, this will affect the normal distribution of chromosomal material to the daughter cells. This will result in a problem called aneuploidy. There are abnormal number of chromosome per cell.
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I'm pretty sure the answer is
C. All cells are produced by other living cells
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Answer:
In a diploid organism there are two copies of most genes.
The versions of the genes are called alleles.
Explanation:
Hello!
The genetic servants of a population are all variants of each of the genes present. These variables are possible thanks to the mutations that occur in the formation of the zygote (before or after fertilization).
When part of the DNA of an organism undergoes a point mutation (on one or a few nitrogenous bases) the body activates a series of responses to reverse it, however sometimes the mutation is maintained and can give rise to a change in a protein.
Sometimes and under certain circumstances (the change should not cause death or significant disadvantages in the body that is born) the mutation is maintained in the population giving rise to different alleles of the same gene.
In an organism there are two copies of each gene (genotype) but only one of them (phenotype) is expressed.
The allele of the gene that is expressed may depend on various factors but the dominant allele is usually expressed.
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Didn't quit understand the question but if you were asking who basically came up with the idea of offspring inherited traits then the idea was proposed in ancient times by Hippocrates and Aristotle and was commonly accepted near to Lamarck's time.
