Fill in the blank, each word can be used more than once. word bank- crossing ove

Question

Fill in the blank, each word can be used more than once.

word bank- crossing over, avoid predation, reproduce, independent assortment, phenotypes, frequencies, nucleotides, meiosis, protein, prophase, segregation, gene, allele, amino acids, fertilization, arrangement, chromosome.

A(n) _________ is one of multiple forms of the same gene.

These different forms of genes are in the same locus of a(n) _________, but they have slightly different sequences of ________.

During ________ I of meiosis, genes of homologous chromosomes align side-by-side.

Then in a process called _________, homologous chromosomes randomly line up double-file at the center of the cell and then seperate. Since alleles are randomly distributed, this process creates variation among the gametes. After ________ with a gamete from the other sex, variation among gametes will create variation among the offspring.

Some offspring will have a more favorable combination of alleles than others, and will therefore survive and ________ more successfully, leading to more favorable alleles in the next generation. However, sometimes conditions change, and once-favorable phenotypes may becomes less favorable.

Scientists hope that they will soon be able to use biotechnology to track the ________ of alleles over multiple generations, thereby watching evolution as it occurs.

Explanation / Answer

A(n) Allele  is one of multiple forms of the same gene.

These different forms of genes are in the same locus of a(n) chromosome , but they have slightly different sequences of nucleotides.

During prophase I of meiosis, genes of homologous chromosomes align side-by-side.

Then in a process called crossing over, homologous chromosomes randomly line up double-file at the center of the cell and then seperate. Since alleles are randomly distributed, this process creates variation among the gametes. After fertilization with a gamete from the other sex, variation among gametes will create variation among the offspring.

Some offspring will have a more favorable combination of alleles than others, and will therefore survive and reproduce more successfully, leading to more favorable alleles in the next generation. However, sometimes conditions change, and once-favorable phenotypes may becomes less favorable.

Scientists hope that they will soon be able to use biotechnology to track the segregation of alleles over multiple generations, thereby watching evolution as it occurs.

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