BIO 235 FULL SOLUTION PACK BUNDLED
DOCS TEST BANK 2026 COMPLETE
ANSWERS ALREADY PASSED GRADED A+
⩥ When do X and Y chromosomes separate in male meiosis? Answer:
Anaphase I
⩥ When do homologous X chromosomes separate in XX females?
Answer: Anaphase I
⩥ What term describes organisms with both male and female
reproductive structures? Answer: Monoecious
⩥ What term describes species with separate sexes? Answer: Dioecious
⩥ What is it called when an organism changes sex during life? Answer:
Sequential hermaphroditism
⩥ What is a male called genetically when he has only one X allele?
Answer: Hemizygous
⩥ Why are females functionally hemizygous for X-linked genes?
Answer: Because one X chromosome is inactivated
, ⩥ What is a Barr body? Answer: An inactivated X chromosome
⩥ How do you calculate number of Barr bodies? Answer: Number of X
chromosomes minus 1
⩥ How many Barr bodies does XXXY have? Answer: 2
⩥ What is penetrance? Answer: Percent of individuals with a genotype
who show the phenotype
⩥ How do you solve penetrance probability problems? Answer:
Multiply genotype probability by penetrance
⩥ If genotype probability is 3/4 and penetrance is 60%, what is
phenotype probability? Answer: 0.45
⩥ If a recessive phenotype appears in 60% of homozygous recessives,
what is the probability child shows trait from two carriers? Answer: 0.15
⩥ What blood type genotypes produce type A phenotype? Answer: AA
or AO
DOCS TEST BANK 2026 COMPLETE
ANSWERS ALREADY PASSED GRADED A+
⩥ When do X and Y chromosomes separate in male meiosis? Answer:
Anaphase I
⩥ When do homologous X chromosomes separate in XX females?
Answer: Anaphase I
⩥ What term describes organisms with both male and female
reproductive structures? Answer: Monoecious
⩥ What term describes species with separate sexes? Answer: Dioecious
⩥ What is it called when an organism changes sex during life? Answer:
Sequential hermaphroditism
⩥ What is a male called genetically when he has only one X allele?
Answer: Hemizygous
⩥ Why are females functionally hemizygous for X-linked genes?
Answer: Because one X chromosome is inactivated
, ⩥ What is a Barr body? Answer: An inactivated X chromosome
⩥ How do you calculate number of Barr bodies? Answer: Number of X
chromosomes minus 1
⩥ How many Barr bodies does XXXY have? Answer: 2
⩥ What is penetrance? Answer: Percent of individuals with a genotype
who show the phenotype
⩥ How do you solve penetrance probability problems? Answer:
Multiply genotype probability by penetrance
⩥ If genotype probability is 3/4 and penetrance is 60%, what is
phenotype probability? Answer: 0.45
⩥ If a recessive phenotype appears in 60% of homozygous recessives,
what is the probability child shows trait from two carriers? Answer: 0.15
⩥ What blood type genotypes produce type A phenotype? Answer: AA
or AO
