Inheritance and Genetic Testing Quiz

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Question #1

A couple is undergoing fertility treatments and has opted to utilize in vitro fertilization. Often, prior to transferring an embryo, it undergoes _____________________ for genetic conditions to improve the odds of success.

A diagnostic testing

B prenatal testing

C carrier testing

D pre implantation testing

E predictive testing

Question #2

The genotype of a female carrier of the X-linked recessive gene for Duchene muscular dystrophy is represented by:

A XdY

B XDXd

C Has Duchene muscular dystrophy

D XDXD

E XDY

F Normal muscle function

Question #3

A young woman had a baby and wished to collect child support from the father. Her blood type is A and the baby’s blood type is O. There are two possible fathers: Jim (who is type O) and Michael (who is type B). Which man could be the father?

A either

B Jim

C Michael

D neither

E not enough information provided to answer the question.

Question #4

Jay has type O blood, and his brother Alon has type AB blood. What are the genotypes of these boys’s parents?

A ii and ii

B IAIA and IBi

C IAi and IBi

D ii and IBi

E Not enough information provided to answer the question

F IAi and IBIB

Question #5

If a female who carries the X-linked recessive gene for hemophilia mates with a male who does not have hemophilia, what is the chance that their daughter will be a carrier of the gene?

A 0%

B 25%

C 50%

D 75%

E 100%

Question #6

A chestnut-colored (red-colored) horse is mated with a cremello (cream-colored) horse. Over a 10-year period, all of their offspring are palominos (gold-colored). This pattern of inheritance is best explained by

A multiple gene effects.

B incomplete dominance.

C codominance.

D complete dominance.

E epistasis.

Question #7

Which of the following expresses Mendel’s law of segregation?

A Two alleles of a gene separate during meiosis and end up in different gametes.

B Genes do not influence each other with regard to sorting of alleles into gametes.

C All dominant alleles of different genes divide into different cells from the recessive alleles.

D Gametes with recessive alleles will fuse only with each other.

E When gametes form, the genes originally from one parent all end up in different gametes from the genes originally from the other parent.

Question #8

In pea plants, the allele for purple flower color is dominant to the allele for white flower color. If you were to perform a test-cross to determine the genotype of a purple-flowered plant, you would expect the percentage of purple-flowered progeny to be _________ if the plant is homozygous and _____________ if the plant is heterozygous.

A 50%; 25%

B 75%; 75%

C 100%; 25%

D 100%; 50%

E 50%; 100%

Question #9

Which of the following statements is NOT true?

A Two organisms with the same phenotype may have different genotypes.

B Two organisms with the same genotypes are homozygous.

C A heterozygous organism has the same number of alleles for a given trait as a homozygous organism.

D A heterozygous organism may have the same phenotype as a homozygous organism.

E All of the above are true.

Question #10

Which of the following applies to both meiosis and mitosis? Select ALL that apply.,,

A chromosomes are replicated prior to division

B undergoes two divisions

C sister chromatids separate

D cytokinesis occurs

E diploid daughter cells are produced.

F cell are genetically unique

Question #11

You look through a microscope, and see a cell with the following characteristics. What phase of the cell cycle is this cell in?

the chromosomes are shaped like lines (not X’s)
the chromosomes are divided at each end of the cell
the nuclear membrane is starting to reform

A the cell could be in telophase I or II, it is impossible to tell from the information given

B the cell could be in telophase I, II or mitosis; it is impossible to tell from the information given

C the cell could be in telophase I or telophase of mitosis, it is impossible to tell from the information given

D telophase of mitosis

E telophase II

F the cell could be in telophase II or telophase of mitosis, it is impossible to tell from the information given

Question #12

The cell in this diagram is undergoing _______________.

A Anaphase II

B Anaphase I

C Telophase I

D Anaphase

E Telophase

F Metaphase II

Question #13

Which of the following would NOT be found in cells undergoing anaphase II of meiosis?

A centromeres

B DNA

C a haploid number of chromosomes

D homologous pairs of chromosomes

E daughter chromosomes

Question #14

Bacteria reproduce asexually, whereas most plants and animals reproduce sexually. Which is the better method?

A Neither method is better—each is effective in different environments for different kinds of organisms.

B asexual reproduction, because binary fission is more efficient

C sexual reproduction, because it produces more variation

D asexual reproduction, because there are more bacteria than plants and animals

E sexual reproduction, because there are more plants and animals than bacteria

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Inheritance and Genetic Testing Quiz

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