Nucleus

Question 1

where does active chromatin stain lightly?

Answer 1

euchromatin

Question 2

where does inactive chromatin stain darkly?

Answer 2

heterochromatin

Question 3

where do rRNA transcription and ribosomal subunit assembly occur?

Answer 3

nucleolus

Question 4

when does one diploid progenitor cell produce 2 diploid daughter cells through the divisional process?

Answer 4

mitosis

Question 5

what are the steps of interphase?

Answer 5

G1 - growth and DNA replication prep

G0 - quiescence

S - DNA replicatin

G2 - mitosis prep

Question 6

which phase does nucleoli disappear, chromatin condenses into chromosomes, sister chromatids join at centromere, centromeres migrate to opposite poles, nuclear lamina and nuclear pore complex dissociate?

Answer 6

prophase

Question 7

which phase do chromosomes condense further, kinectochores at each centromere attach to mitotic spindle, chromosomes align on metaphase plate?

Answer 7

metaphase

Question 8

which phase do sister chromatids separate and chromosomes move toward opposite spindle poles?

Answer 8

anaphase

Question 9

which phase do chromosomes condense, spindle dissociates, nuclear envelope reforms, cleavage furrow forms?

Answer 9

telophase

Question 10

when does 1 diploid progenitor cell become 4 haploid daughter cells?

Answer 10

meiosis

Question 11

how is meiosis I different from mitosis?

Answer 11

synapsis and crossing over occurs in meiosis I

Question 12

when does crossing over occur?

Answer 12

prophase meiosis I

Question 13

which process produces diploid cells?

Answer 13

mitosis

Question 14

which process is good for tissue growth and repair throughout the body?

Answer 14

mitosis

Question 15

which process produces haploid cells?

Answer 15

meiosis

Question 16

which process is good for formation of gametes?

Answer 16

meiosis

Question 17

which process is visualized in a histopath slide?

Answer 17

mitosis

Question 18

what genetic condition is caused by an abnormal chromosomal count, commonly miscarried?

Answer 18

aneuploidies

Question 19

most common human autosomal aneuploidies

Answer 19

• 21 (Down syndrome)
• 18 (Edwards syndrome)
• 13 (Patau syndrome)

Question 20

what syndrome causes taller, normal fertility, some learning disabilities, increased interocular distance, and no symptoms?

Answer 20

XXX (Triple X syndrome)

Question 21

which syndrome causes taller, normal fertility, some learning disabilities, never diagnosed?

Answer 21

XYY-XYY (Double Y syndrome)

Question 22

which syndrome causes taller, sterile, smaller testicles, decreased body hair, lower libido, some learning disabilities?

Answer 22

XXY (Klinefelter syndrome)

Question 23

which syndrome causes shorter, low set ears, webbed neck, can only become pregnant with intervention, normal intelligence?

Answer 23

X0 (Turner syndrome)