BYUI UNIT 2 GENETICS BIO 181 QUESTIONS AND ANSWERS 2025

BYUI UNIT 2 GENETICS BIO 2025
181
ANSWER ALL QUESTIONS IN THIS SECTION



QUESTION 1



Nondisjunction - ANSWERS-the failure of synapsed homologs to completely
separate and migrate to separate poles during the first cell division of meiosis



QUESTION 2



nonparental (recombinant) type - ANSWERS-progeny resulting from homologous
recombination that exhibits a different allele combination compared with its
parents



QUESTION 3



paracentric - ANSWERS-inversion that occurs outside of the centromere



QUESTION 4



parental types - ANSWERS-progeny that exhibits the same allelic combination as
its parents


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QUESTION 5



pericentric - ANSWERS-inversion that involves the centromere



QUESTION 6



polyploid - ANSWERS-individual with an incorrect number of chromosome sets



QUESTION 7



recombination frequency - ANSWERS-average number of crossovers between two
alleles; observed as the number of nonparental types in a population of progeny



QUESTION 8



Translocation - ANSWERS-process by which one segment of a chromosome
dissociates and reattaches to a different, nonhomologous chromosome



QUESTION 9



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Trisomy - ANSWERS-otherwise diploid genotype in which one entire
chromosome is duplicated

QUESTION 10



X inactivation - ANSWERS-the condensation of X chromosomes into Barr bodies
during embryonic development in females to compensate for the double genetic
dose



QUESTION 11



Electrophoresis - ANSWERS-technique used to separate DNA fragments
according to size



QUESTION 12



Helicase - ANSWERS-during replication, this enzyme helps to open up the DNA
Helix by breaking the hydrogen bonds



QUESTION 13



induced mutation - ANSWERS-mutation that results from exposure to chemicals
or environmental agents

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