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How many alleles does a man have for a gene that is found on an autosome?

How many alleles does a man have for a gene that is found on an autosome?. 0 1 2 4. What process is illustrated and when does it occur?. Kinetochore attachment: prophase I Recombination: fertilization Crossing over: prophase I Recombination: prometaphase.

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How many alleles does a man have for a gene that is found on an autosome?

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  1. How many alleles does a man have for a gene that is found on an autosome? • 0 • 1 • 2 • 4

  2. What process is illustrated and when does it occur? • Kinetochore attachment: prophase I • Recombination: fertilization • Crossing over: prophase I • Recombination: prometaphase

  3. Which of the following is a testcross? • AaBb x AaBb • AaBB x aaBB • aabb x aabb • AaBb x aabb

  4. What is the phenotypic ratio of the following cross? Aa x Aa • 3 Aa: 1 Aa • 1AA: 2Aa: 1aa • 3 black: 1 white • 1 black: 2 lethal/dead: 1 white

  5. Which of the following genotypes is incorrectly paired with its phenotype?(R: Rh + / r: Rh-) • IBIB rr  B- • IBi Rr  B+ • ii Rr  O- • IAIB Rr  AB+

  6. Which chromosome is absolutely necessary for an embryos survival? • Autosome Y • Sex chromosome Y • Sex chromosome X • All of the above

  7. Which of the following inheritance patterns is incorrectly paired with its definition? • Autosomal recessive: organism needs 2 alleles to show phenotype • Pleiotropy: several genes encode information for 1 phenotype • Epistasis: 1 gene can suppress effect/product of another gene • Sex-linked recessive: women need 2 alleles and men need 1 allele to show phenotype

  8. What is the function of PCR? • Increase the amount of specific DNA regions • Identify an individuals genotype • Provide a DNA fingerprint • Test for paternity • All of the above

  9. Why do DNA fragments move in gel electrophoresis? • They are small • They are nonpolar • They have a negative charge • They are ionic

  10. What is the function of restriction enzymes in biotechnology? • Anneal to DNA • Splice DNA • Elongate DNA • Seal DNA

  11. Which of the following is an example that could lead to sympatric speciation? • A polyploidy plant • A diploid plant • 2 species of squirrel separated by the Grand Canyon • A & C

  12. Which of the following is NOT a condition of Hardy-Weinberg? • Small population • No mutation • Random mating • No gene flow • No natural selection

  13. A disease is inherited recessively. If the frequency of the A allele in a population is 0.4, what would be the frequency of inheriting the disease? • 40% • 16% • 60% • 36%

  14. What is convergent evolution? • Evolution of similar phenotype in very distantly related lineages • Evolution of similar phenotype in closely related lineages • Accumulation of differences between groups which may lead to speciation • Convergent evolution is synonymous with adaptive radiation.

  15. A change in allele frequency would be most likely in which situation? • When an ecosystem is stable • After a massive hurricane • If a region goes through a severe drought • All of the above • B & C

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