WGU C653 HEREDITY AND GENETICS
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS COMPREHENSIVE
STUDY GUIDE
●● allele
Answer: this is the term for one of a number of different forms of a gene
●● phenotype
Answer: physical characteristics of an organism
●● genotype
Answer: genetic makeup of an organism
●● heterozygous
Answer: this term describes an organism that has two different alleles
for a trait
●● homozygous
Answer: this term describes an organism that has two identical alleles
for a trait
, ●● dominant
Answer: describes a trait that covers over, or dominates, another form of
that trait
●● recessive
Answer: an allele that is masked when a dominant allele is present
●● meiosis
Answer: cell division that produces reproductive cells in sexually
reproducing organisms; one diploid cell containing forty six
chromosomes undergoes one round of chromosome replication and two
rounds of division to produce four haploid cells each of which contains
one copy of each chromosome
●● Interphase
Answer: this is the phase during which the chromosomes replicate
●● Prophase I
Answer: during this phase chromosomes condense and become visible
under a microscope, the nuclear envelope disappears, and the spindle
becomes organized
●● Metaphase I
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS COMPREHENSIVE
STUDY GUIDE
●● allele
Answer: this is the term for one of a number of different forms of a gene
●● phenotype
Answer: physical characteristics of an organism
●● genotype
Answer: genetic makeup of an organism
●● heterozygous
Answer: this term describes an organism that has two different alleles
for a trait
●● homozygous
Answer: this term describes an organism that has two identical alleles
for a trait
, ●● dominant
Answer: describes a trait that covers over, or dominates, another form of
that trait
●● recessive
Answer: an allele that is masked when a dominant allele is present
●● meiosis
Answer: cell division that produces reproductive cells in sexually
reproducing organisms; one diploid cell containing forty six
chromosomes undergoes one round of chromosome replication and two
rounds of division to produce four haploid cells each of which contains
one copy of each chromosome
●● Interphase
Answer: this is the phase during which the chromosomes replicate
●● Prophase I
Answer: during this phase chromosomes condense and become visible
under a microscope, the nuclear envelope disappears, and the spindle
becomes organized
●● Metaphase I
