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Genetics Final Exam Questions and Answers (RATED A)
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Genetics Final Exam Questions and Answers (RATED A)Genetics Final Exam Questions and Answers (RATED A)Genetics Final Exam Questions and Answers (RATED A)Genetics Final Exam Questions and Answers (RATED A)The idea that a homunculus exists within the gametes was called: preformationism inheritan...

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  • August 6, 2024
  • 43
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • genetics final exam questions and answers rated a
  • genetics final exam questions and answers
  • the idea that a homunculus exists within the gamet

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Genetics Final Exam
Questions and Answers
(RATED A)

,The idea that a homunculus exists within the gametes was called:



preformationism

inheritance of acquired characteristics

pangenesis

blending inheritance - ANSWER preformationism



Synapsis refers to:



dyad formation

side-by-side alignment of non homologous chromosomes

side-by-side alignment of homologous chromosomes

monad movement to opposite poles

chiasma segregation - ANSWER side-by-side alignment of homologous chromosomes



A chromosome with a centromere in the middle is called:



submetacentric

telocentric

metacentric

homologous

acrocentric - ANSWER metacentric



During which cellular division does reduction occur:



cytokinesis

meiosis II

meiosis I

mitosis - ANSWER meiosis I

,Temperature can affect the phenotype of an individual



T/F - ANSWER True



Pleiotropy occurs when one gene:



masks the effect of another gene

impacts different aspects of the overall phenotype

has reduced penetrance

is influenced by the environment to determine the overall phenotype - ANSWER impacts different
aspects of the overall phenotype




During which phase do homologous chromosomes separate?



prophase I

mitosis

prophase II

anaphase I

anaphase II - ANSWER anaphase I



Model organisms can not be used to understand complex genetic organisms like humans.



T/F - ANSWER False



An autosomal recessive trait is expected to skip generations in a family.



T/F - ANSWER True

, You would expect all sons of a female with an X-linked recessive disorder to be affect.



T/F - ANSWER True

In an organism with 16 chromosomes in somatic cells, how many chromosomes are expected in each
gamete ?



4

64

16

8

32 - ANSWER 8



Which of the following statements best describes the major difference between sex determination in
Drosophilia (fruit fly) and in humans?



In Drosophilia, the absence of a Y chromosome determines maleness while in humans the presence of
the Y chromosome determines femaleness



In Drosphilia, the ratio of X chromosomes to the number of haploid sets of autosomes determines the
sex while in humans the presence of the Y chromosome determines maleness



In Drosophilia, the ratio of X chromosomes to the number of haploid sets of autosomes determines the
sex while in humans the presence of at least two X-chromosomes determines femaleness



In Drosophilia, the absence of a Y chromosome determines femaleness while in humans the presence of
a Y chromosome determines maleness. - ANSWER In Drosophilia, the ratio of X chromosomes to the
number of haploid sets of autosomes determines the sex while in humans the presence of the Y
chromosome determines maleness



Sex limited traits are:

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