Self-Quiz Unit 6 Attempt review PDF

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Self-quiz unit 6 answers for Biology 1 for Health Studies Majors that can help you study for graded-quizes and final exam....

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Dashboard / My courses / BIOL 1121 - AY2022-T1 / 7 October - 13 October / Self-Quiz Unit 6

Started on

Tuesday, 12 October 2021, 3:13 PM

State Finished Completed on Time taken Marks

Tuesday, 12 October 2021, 3:15 PM 2 mins 11 secs 17.00/17.00

Grade 100.00 out of 100.00 Question

1

Correct Mark 1.00 out of 1.00

Meiosis produces _____________ daughter cells.

Select one: a.

two haploid

b. two diploid c.

four haploid



d. four diploid

The correct answer is: four haploid

Question

2

Correct Mark 1.00 out of 1.00

What structure is most important in forming the tetrads?

Select one: a.

centromere

b. synaptonemal complex c.

chiasma

d. kinetochore

The correct answer is: synaptonemal complex



Question

3

Correct Mark 1.00 out of 1.00

At which stage of meiosis are sister chromatids separated from each other?

Select one: a.

prophase I

b. prophase II c.

anaphase I

d. anaphase II



The correct answer is: anaphase II

Question

4

Correct Mark 1.00 out of 1.00

Which type of life cycle has both a haploid and diploid multicellular stage?

Select one: a.

asexual

b. diploid-dominant c.

haploid-dominant

d. alternation of generations

The correct answer is: alternation of generations



Question

5

Correct Mark 1.00 out of 1.00

Fungi typically display which type of life cycle?

Select one: a.

diploid-dominant

b. haploid-dominant c.



alternation of generations

d. asexual

The correct answer is: haploid-dominant

Question

6

Correct Mark 1.00 out of 1.00

A diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a _____________.

Select one: a.

sporophyte

b. gametophyte c.

spore

d. gamete

The correct answer is: sporophyte



Question

7

Correct Mark 1.00 out of 1.00

Mendel performed hybridizations by transferring pollen from the __________ of the male plant to the female ova.

Select one: a.

anther



b. pistil c.

stigma

d. seed

The correct answer is: anther

Question

8

Correct Mark 1.00 out of 1.00

Which is one of the seven characteristics that Mendel observed in pea plants?

Select one: a.

flower size

b. seed texture c.

leaf shape

d. stem color

The correct answer is: seed texture



Question

9

Correct Mark 1.00 out of 1.00

Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross truebreeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.

Select one: a.

100 percent yellow-green seeds

b. 100 percent yellow seeds c.



50 percent yellow, 50 percent green seeds

d. 25 percent green, 75 percent yellow seeds

The correct answer is: 100 percent yellow seeds

Question

10

Correct Mark 1.00 out of 1.00

The observable traits expressed by an organism are described as its ___________.

Select one: a.

phenotype

b. genotype c.

alleles

d. zygote

The correct answer is: phenotype



Question

11

Correct Mark 1.00 out of 1.00

A recessive trait will be observed in individuals that are ___________ for that trait.

Select one: a.

heterozygous

b. homozygous or heterozygous c.

homozygous



d. diploid

The correct answer is: homozygous

Question

12

Correct Mark 1.00 out of 1.00

The forked line and probability methods make use of what probability rule?

Select one: a.

test cross

b. product rule c.

monohybrid rule

d. sum rule

The correct answer is: product rule



Question

13

Correct Mark 1.00 out of 1.00

How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when the traits behave in a dominant and recessive pattern? How many phenotypes?

Select one: a.

64 genotypes; 16 phenotypes

b. 16 genotypes; 64 phenotypes c.

8 genotypes; 27 phenotypes

d. 27 genotypes; 8 phenotypes



The correct answer is: 27 genotypes; 8 phenotypes

Question

14

Correct Mark 1.00 out of 1.00

The genotype XXY corresponds to:

Select one: a.

Klinefelter syndrome

b. Turner syndrome c.

Triplo-X

d. Jacob syndrome

The correct answer is: Klinefelter syndrome



Question

15

Correct Mark 1.00 out of 1.00

Abnormalities in the number of X chromosomes tends to have milder phenotypic effects than the same abnormalities in autosomes because of ___________.

Select one: a.

deletions

b. nonhomologous recombination c.

synapsis

d. X inactivation



The correct answer is: X inactivation

Question

16

Correct Mark 1.00 out of 1.00

By definition, a pericentric inversion includes the ___________.

Select one: a.

centromere

b. chiasma c.

telomere

d. synapse

The correct answer is: centromere



Question

17

Correct Mark 1.00 out of 1.00

Assume a pericentric inversion occurred in one of two homologs prior to meiosis. The other homolog remains normal. During meiosis, what structure—if any—would these homologs assume in order to pair accurately along their lengths?

Select one: a.

V formation

b. cruciform c.

loop



d. pairing would not be possible

The correct answer is: loop

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