0 [{"id":333458,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:07:05","updated_at":"2017-12-07 00:20:27","questionName":"The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":0,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333447,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:40:57","updated_at":"2017-12-07 00:20:27","questionName":"In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in Figure 14.1, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square.Which of the boxes correspond to plants with a heterozygous genotype?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":"uploads\/lesson-6-quiz\/Screen Shot 2017-12-06 at 8.40.39 PM.png","position":14,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333442,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:34:29","updated_at":"2017-12-07 00:20:27","questionName":"Given the parents AABBCc \u00d7 AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":11,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333445,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:39:46","updated_at":"2017-12-07 00:20:27","questionName":"Feather colour in budgies is determined by two different genes, Y and B, one for pigment on the outside and one for the inside of the feather. YYBB, YyBB, or YYBb is green; yyBB or yyBb is blue; YYbb or Yybb is yellow; and yybb is white. A blue budgie is crossed with a white budgie. Which of the following results is not possible?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":13,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333465,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:15:01","updated_at":"2017-12-07 00:20:27","questionName":"In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous tall plant, what is the probability that the offspring will be short?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":7,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333466,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:15:52","updated_at":"2017-12-07 00:20:27","questionName":"Which number represents DNA synthesis?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":"uploads\/lesson-6-quiz\/Screen Shot 2017-12-06 at 9.15.13 PM.png","position":8,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333464,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:14:07","updated_at":"2017-12-07 00:20:27","questionName":"There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations. In these asexual rotifers, how does variation occur without meiosis and fertilization?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":6,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333459,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:08:46","updated_at":"2017-12-07 00:20:27","questionName":"In the cross AaBbCc \u00d7 AaBbCc, what is the probability of producing the genotype AABBCC?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":1,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333441,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:33:46","updated_at":"2017-12-07 00:20:27","questionName":"In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in Figure 14.1, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square. Which of the boxes marked 1-4 correspond to plants with dark leaves?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":10,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333460,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:09:48","updated_at":"2017-12-07 00:20:27","questionName":"When both traits are exhibited in the phenotype, it is said that the alleles display","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":2,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333463,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:12:49","updated_at":"2017-12-07 00:20:27","questionName":"Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What fraction of the progeny of crosses BbTt \u00d7 BBtt will be expected to have black fur and long tails?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":5,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333443,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:35:43","updated_at":"2017-12-07 00:20:27","questionName":"Mendel's observation of the segregation of alleles in gamete formation has its basis in which of the following phases of cell division?","questionTimeSeconds":"0","questionTimeMinutes":"20","questionImagePath":null,"position":12,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333462,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:11:28","updated_at":"2017-12-07 00:20:27","questionName":"Which of the following occurs in meiosis but not in mitosis?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":4,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333439,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-06 23:30:49","updated_at":"2017-12-07 00:20:27","questionName":"Autosomes are chromosomes, which are...","questionTimeSeconds":"59","questionTimeMinutes":"20","questionImagePath":null,"position":9,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":333461,"quiz_id":"16932","answer_id":null,"answerType_id":"0","created_at":"2017-12-07 00:10:25","updated_at":"2017-12-07 00:20:27","questionName":"Skin colour in a certain species of fish is inherited via a single gene with four different alleles. One fish of this type has alleles 1 and 3 (S1S3) and its mate has alleles 2 and 4 (S2S4). If each allele confers a unit of colour darkness such that S1 has one unit, S2 has two units, and so on, then what proportion of their offspring would be expected to have five units of colour?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":3,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null}]

block

The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason?

Select the correct answer(s).  

(0/0)

---

crossing over during prophase I

segregation of maternal and paternal alleles

recurrent mutations forming new alleles

different possible alignments of chromosomes

the tendency for dominant alleles to segregate together

none

In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in Figure 14.1, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square.Which of the boxes correspond to plants with a heterozygous genotype?

Select the correct answer(s).  

(0/0)

---

1

1, 2, and 3

2, 3, and 4

1 and 2

2 and 3

none

Given the parents AABBCc × AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?

Select the correct answer(s).  

(0/0)

---

1/4

3/4

3/8

1

1/8

none

Feather colour in budgies is determined by two different genes, Y and B, one for pigment on the outside and one for the inside of the feather. YYBB, YyBB, or YYBb is green; yyBB or yyBb is blue; YYbb or Yybb is yellow; and yybb is white. A blue budgie is crossed with a white budgie. Which of the following results is not possible?

Select the correct answer(s).  

(0/0)

---

a 9:3:3:1 ratio

blue offspring only

green and yellow offspring

green offspring only

yellow offspring only

none

In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous tall plant, what is the probability that the offspring will be short?

Select the correct answer(s).  

(0/0)

---

1/4

1/2

1/6

0

1

none

Which number represents DNA synthesis?

Select the correct answer(s).  

(0/0)

---

IV

II

III

V

I

none

There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations. In these asexual rotifers, how does variation occur without meiosis and fertilization?

Select the correct answer(s).  

(0/0)

---

Variation is caused by mutation and maintained by selection.

Rotifers must live only in specialized environments.

The rotifers have evolved a different mechanism to exchange DNA.

Some rotifers must selectively lose chromosomes

Rotifers must produce haploid spores.

none

In the cross AaBbCc × AaBbCc, what is the probability of producing the genotype AABBCC?

Select the correct answer(s).  

(0/0)

---

1/64

1/64

1/16

1/4

1/8

none

In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in Figure 14.1, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square. Which of the boxes marked 1-4 correspond to plants with dark leaves?

Select the correct answer(s).  

(0/0)

---

1, 2, and 3

1 and 2

1 Only

2 and 3

4 only

none

When both traits are exhibited in the phenotype, it is said that the alleles display

Select the correct answer(s).  

(0/0)

---

incomplete dominance.

complete dominance.

co-dominance.

recessive traits.

gene silencing.

none

Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What fraction of the progeny of crosses BbTt × BBtt will be expected to have black fur and long tails?

Select the correct answer(s).  

(0/0)

---

1/2

3/8

9/16

1/16

3/16

none

Mendel's observation of the segregation of alleles in gamete formation has its basis in which of the following phases of cell division?

Select the correct answer(s).  

(0/0)

---

prophase I of meiosis

anaphase II of meiosis

metaphase I of meiosis

anaphase of mitosis

anaphase I of meiosis

none

Which of the following occurs in meiosis but not in mitosis?

Select the correct answer(s).  

(0/0)

---

production of daughter cells

chromosome replication

condensation of chromatin

alignment of chromosomes at the equator

synapsis of chromosomes

none

Autosomes are chromosomes, which are...

Select the correct answer(s).  

(0/0)

---

the only chromosomes that are inherited.

involved in sexual identity.

the only chromosomes that are inherited.

involved in the autoimmune responses

all chromosomes, except sex chromosomes.

capable of reproducing themselves

none

Skin colour in a certain species of fish is inherited via a single gene with four different alleles. One fish of this type has alleles 1 and 3 (S1S3) and its mate has alleles 2 and 4 (S2S4). If each allele confers a unit of colour darkness such that S1 has one unit, S2 has two units, and so on, then what proportion of their offspring would be expected to have five units of colour?

Select the correct answer(s).  

(0/0)

---

0

1/2

1/8

1/4

1/5