Biology

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coralpug441Lv1

28 Sep 2019

The house mouse, Mus musculus, has a diploid chromosome numberof 40. How many chromosomes would be found in the following?

a. monosomic cell

b. trisomic cell

c. nullisomic cell

d. double tetrasomic cell

e. triploid cell

f. 4n + 2 cell

g. disomic gamete

h. nullisomic gamete

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Deanna HettingerLv2

28 Sep 2019

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Related questions

19.

Matching: Choose the best answer.

Responsible for familial Down Syndrome:	...MonosomicPericentric InversionRobertsonian TranslocationParacentric InversionDeletionTrisomicDuplicationReciprocal Translocation
Responsible for Burkitt's Lymphoma:	...MonosomicPericentric InversionRobertsonian TranslocationParacentric InversionDeletionTrisomicDuplicationReciprocal Translocation
Dicentric bridges are common in heterozygotes:	...MonosomicPericentric InversionRobertsonian TranslocationParacentric InversionDeletionTrisomicDuplicationReciprocal Translocation
Responsible for Turner Syndrome:	...MonosomicPericentric InversionRobertsonian TranslocationParacentric InversionDeletionTrisomicDuplicationReciprocal Translocation

20. An individual has the chromosomes below where the dot represents the centromere:

EFGH.IJKL EFGKJI.HL

If a crossover event occurs between the H and I loci, two recombinant chromosomes will be formed.

Enter the shortest recombinant chomosome with no spaces between the loci, using a period as the centromere.

21. A plant species is described as 2n=16.

How many chromosomes present in a triploid cell from this plant?

22. A plant species is described as 2n=16.

How many chromosomes present in a monosomic cell from this plant?

23. A plant species is described as 2n=16.

How many chromosomes present in a double trisomic cell from this plant?

24. A plant species is described as 2n=16.

How many chromosomes present in a nullisomic cell from this plant?

Nonsister chromatids:

a. are attached at the centromere

b. both come from the father

c. are segregated randomly at meiosis I

d. come from both the maternal and paternal genomes

e. none of the above

(I know crossing over for nonsister chromatids occur duringmeiosis I...)

Telomeres are specialized repetative DNA sequences found at theends of chromosomes. How many telomeres are present in ahuman cell at prophase I of meiosis?

a. 23

b. 46

c. 92

d. 184

e. 368

A human cell has 23 chromosomes with 46 chromosome. In whichphase of meiosis is it?

a. telophase II

b. metaphase I

c. prophase II

d. prophase I

e. all but c

A triploid cell contains 3 sets of chromosomes. If acell of a usually diploid species with 42 chromosomes per cell istriploid, this cell would be expected to have which of thefollowing?

a. 63 chromosomes on 31 1/2 pairs

b. 63 chromosomes in 21 sets of 3

c. 63 chromosomes, each with three chromatids

d. 21 chromosome pairs and 21 unique chromosomes

(I'm leaning toward b, but I'm not sure)