SCIN 130 Week 4 Quiz

SCIN 130 Week 4 Quiz | Assignment Help | APUS 

Week 4 Quiz

Question 1 of 31

 Which type of human cells contain a half set of chromosomes (often written as n)?

  A. nucleus

  B. chromosome

  C. genome

  D. gamete

 Question 2 of 31

 What is the purpose of overall purpose of mitosis?

  A. To produce gametes

  B. To produce daughter cells

  C. To accomplish nuclear division

  D. To accomplish cell division

 Question 3 of 31

 During which stage in interphase does DNA synthesis occur?

  A. Mitosis

  B. G2 phase

  C. G1 phase

  D. S phase

 Question 4 of 31

 What is the purpose of checkpoints in the cell cycle?

  A. to keep any foreign DNA out of the cell

  B. to ensure detrimental mutations are not passed on

  C. to maintain protein health in the cell

  D. to make the division move faster

 Question 5 of 31

 What are oncogenes?

  A. genes that are responsible for hair loss

  B. normal cells that are visible on an X-ray

  C. genes that cause a cell to become cancerous

  D. cells that cause a mass without negative effects

.Question 6 of 31

 In general, the cell cycle can be divided into three basic phases. What are they?

  A. meiosis, mitosis, S

  B. G1, S, G2

  C. interphase, mitosis, cytokinesis

  D. prophase, anaphase, telophase

Question 7 of 31

When does nondisjunction of chromosomes occur?

  A. chromosomes are structurally rearranged

  B. portions of chromosomes are duplicated

  C. failure of homologous chromosomes or sister chromatids to separate

  D. portions of chromosomes are deleted

Question 8 of 31

 Which event leads to a haploid cell in a life cycle?

  A. fertilization

  B. mutation

  C. meiosis

  D. alternation of generations

Question 9 of 31

Tortoise shell cats have variegated coat colors caused by X inactivation and are always what?

  A. heterozygous females

  B. heterozygous males

  C. homozygous males

  D. homozygous females

.

Question 10 of 31

 What type of daughter cells are produced during meiosis?

  A. genetically identical to each other

  B. genetically aneuploids

  C. genetically identical to the mother cell

  D. genetically distinct due to crossing over

.

Question 11 of 31

What is an individual with an extra set of chromosomes called?

  A. polyploid

  B. euploid

  C. aneuploid

  D. autosome

Question 12 of 31

 In which phase of meiosis does crossing over between homologous chromosomes occur?

  A. cytokinesis

  B. meiosis II

  C. meiosis I

  D. interphase

Question 13 of 31

 What is the genetic make-up of an organism is described as?

  A. zygotes

  B. genotype

  C. phenotype

  D. alleles

 Question 14

 if a female that are homozygous recessive for a sex-linked disease, and the father has the dominate phenotype, what percentage of their female offspring will be carriers?

 A. 0%

 B. 100%

 C. 50%

 D. 25%

.

Question 15 of 31

 In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be heterozygous?

  A. 25%

  B. 75%

  C. 50%

  D. 100%

Question 16 of 31

What is epistasis?

  A. an interaction between genes such that one gene masks or interferes with the expression of another

  B. in a heterozygote, expression of two contrasting alleles such that the individual displays an intermediate phenotype

  C. in a heterozygote, one trait will conceal the presence of another trait for the same characteristic

  D. a phenomenon in which alleles that are located in close proximity to each other on the same chromosome are more likely to be inherited together

Question 17 of 31

 How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCc?

  A. 1

  B. 4

  C. 8

  D. 2

Question 18 of 31

 In humans, which of the following is not a sex-linked conditions?

  A. some forms of color-blindness

  B. muscular dystrophy

  C. left or right handiness

  D. hemophilia

.

Question 19 of 31

 What is the theme behind Mendelian inheritance?

  A. Even with peas, color and size are not predictable using a Punnett Square.

  B. All diseases are the result of mutations.

  C. The majority of traits are recessive, so do not change often.

  D. Traits are controlled by a single gene, and you get one copy from each parent.

Question 20 of 31

 What is the purpose of a Punnett Square?

  A. it is a way to visualize only the phenotype in a population

  B. it is a way to visualize only the genotype of a cross

  C. it is a way to visualize the chromosomes in a population

  D. it is a way to visualize the phenotype and genotype of a cross

Question 21 of 31

 What is the term for an individual with one dominant copy of a gene, and one recessive copy of the same gene?

  A. recessive

  B. heterozygote

  C. homozygote

  D. dominant

Question 22 of 31

 Which type of experimental design informs the researchers whom the treatment group is, but not the study subjects?

  A. single blind

  B. double blind

  C. triple blind

  D. no blind

Question 23 of 31

 What is the phenomenon when a fake treatment improves a patient’s condition simply because he or she expects that it will help, but not that it is helping?

  A. placebo effect

  B. sample size

  C. positive result

  D. control group

Question 24 of 31

 Why is randomization important in an experimental design?

  A. to reduce bias in the experiment

  B. to increase the number of sample units

  C. to make it easier for the researcher to find participants

  D. to shorten the time it takes for the experiment

 Question 25 of 31

 What was a big different between the fossils in layer 5 and those in layer 2?

  A. Layer 5 had fish that were mostly female

  B. Layer 2 had fish that were mostly female

  C. Layer 2 contained mostly fish without spines

  D. Layer 5 contained mostly fish without spines

.

Question 26 of 31

 Why did we use a line graph for the data in this experiment?

  A. It is the only type where time can be added

  B. They are used to represent continuous data

  C. You can compare one point in time

  D. They have an X and Y axis

.Question 27 of 31

 How many years separation does each layer in this fossilized stickleback lab represent?

  A. 1 billion

  B. 3,000

  C. 1 million

  D. 10,000

Question 28 of 31

 What is one advantage to studying fossils?

  A. We can see long-term patterns

  B. There is indication of what is occurring in real-time

  C. We can alter current evolution

  D. There are no advantages to fossils

Question 29 of 31

 What score would you assign to a fossil specimen that has only one pelvic spine visible?

  A. complete

  B. reduced

  C. semi-absent

  D. absent

.

Question 30 of 31

 In a few sentences, what was the overall purpose of the lab for this week? You should include 1-2 sentences on the methods and then the overall reason.

Question 31 of 31

Please upload your completed Lab Packet for this week. Make sure your name is on the top in the space provided.