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In a fly with the genotype AaBb. where A and B are two genes located on the same

ID: 57117 • Letter: I

Question

In a fly with the genotype AaBb. where A and B are two genes located on the same chromosome, the arrangement of the alleles on the two homologous chromosomes can be correctly shown as AB/ba True False Genes that are genetically linked to each other cannot be present on different chromosomes True False For genes that are genetically linked to each other, random assortment is seen, True False Crossing-over in prophase I leads to the formation of recombinant gametes True False An individual with the genotype AaBb produces the following numbers of the different gametes: 20 AB 5 Ab 4 aB 19 ab True/false: This indicates that the A and B genes are linked to each other.

Explanation / Answer

Answer1. In fly with genotype AaBb, where A and B are two genes located on the same chromosome,the arrangement of alleles on two homologous chromosomes can be shown as AB/ba

Option a- True

Answer 2. Genes that are genetically linked to each other cannot be present on different chromosome.

Option a- True.

Answer 3. For genes that are genetically linked to each other,random assortment is seen

Option b-False.

Answer 4. Crossing over in prophase I leads to formation of recombinant gametes

Option a- True

Answer 5. True-This indicates that A and B are linked to each other.

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