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Genetics Lecture > Module 4: Practice Test > Flashcards

Module 4: Practice Test Flashcards

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Biology 101 flashcards
1
Q

Which is TRUE about genes during development?

A. DNAs of differentiated cells are not identical.
B. Genes are turned on at any time.
C. Only a small percentage of the genome is expressed in each cell.
D. Unused genes in differentiated cells are destroyed.

A

C. Only a small percentage of the genome is expressed in each cell.

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2
Q

Which of the following describes gene amplification?

A. Increase in amount of the products of transcription.
B. Proportional increase in the number of copies of all genes.
C. Selective increase in the number of copies of a gene.
D. The amount of DNA also increases.

A

C. Selective increase in the number of copies of a gene.

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3
Q

Polytene chromosomes can be found in ___.

A. Flour moth larval eyes and skin cells.
B. Fruit fly salivary gland cells.
C. Immature red blood cells.
D. North American newt oocytes.

A

B. Fruit fly salivary gland cells.

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4
Q

Lampbrush chromosomes occur in ____.

A. Flour moth larval eyes and skin cells.
B. Fruit fly salivary gland cells.
C. Immature red blood cells.
D. North American newt oocytes.

A

D. North American newt oocytes.

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5
Q

Which is NOT true about reticulocytes?

A. Contains RNA necessary to translate proteins.
B. Contains residual DNA.
C. Immature RBCs without nuclei.
D. Synthesize hemoglobin.

A

B. Contains residual DNA.

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6
Q

Which of the following molecules does NOT involve energy-dependent transport in the nucleocytoplasmic interactions?

A. RNA Products
B. Protein Products
C. Small Molecules
D. None of the Above

A

C. Small Molecules

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7
Q

These are cells that can develop into any kind of cell.

A. Multipotent
B. Pluripotent
C. Totipotent
D. A and B
E. A and C

A

C. Totipotent

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8
Q

This refers to stem cells (SCs) that give rise to connective tissues in mammals.

A. Epithelial SCs
B. Hematopoietic SCs
C. Mesenchymal SCs
D. Neural SCs

A

C. Mesenchymal SCs

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9
Q

This refers to stem cells (SCs) that give rise to blood cells in mammals.

A. Epithelial SCs
B. Hematopoietic SC
C. Mesenchymal SCs
D. Neural SCs

A

B. Hematopoietic SC

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10
Q

The process by which differentiated cells are organized into a hierarchy of tissues, organs, and organ systems.

A. Differentiation
B. Histogenesis
C. Induction
D. Morphogenesis

A

D. Morphogenesis

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11
Q

The process by which one group of cells send out signals that can guide how the differentiation process is carried out.

A. Differentiation
B. Histogenesis
c. Induction
D. Morphogenesis

A

B. Histogenesis

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12
Q

Which of the following genes is involve in the development of parathyroid gland in mice?

A. FGF
B. HOX15
C. JAK2
D. SRY

A

B. HOX15

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13
Q

This gene provides instructions for making a protein involved in male-typical sex development.

A. FGF
B. H0X15
C. JAK2
D. SRY

A

D. SRY

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14
Q

A cross between a heterozygous (Aa) pigmented female flour moth and a homozygous (aa) non-pigmented male flour moth results into:

A. 1Aa (non-pigmented) : 1aa (non-pigmented)
B. 1Aa (non-pigmented) : 1aa (pigmented)
C. 1Aa (pigmented) : 1aa (non-pigmented)
D. 1Aa (pigmented) : 1aa (pigmented)

A

B. 1Aa (non-pigmented) : 1aa (pigmented)

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15
Q

A cross between a homozygous (aa) non-pigmented female flour moth and a heterozygous (Aa) pigmented male flour moth results into:

A. laa (non-pigmented) : 1Aa (non-pigmented)
B. laa (non-pigmented) : 1Aa (pigmented)
C. 1aa (pigmented) : 1Aa (non-pigmented)
D. 1aa (pigmented) : 1Aa (pigmented)

A

B. laa (non-pigmented) : 1Aa (pigmented)

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16
Q

A cross between a dextral (DD) female freshwater snail and a sinistral (dd) male produces:

A. 1 dextral: 1 sinistral offspring
B. 3 dextral: 1 sinistral offspring
C. all dextral offspring
D. all sinistral offspring

A

C. all dextral offspring

17
Q

A cross between a female parent of 4 o’clock plant with variegated leaves and a male parent with green leaves produces:

A. 1 variegated : 1 green offspring
B. 3 variegated : 1 green offspring
C. all green offspring
D. all variegated offspring
E. all white offspring
F. green, white, or variegated offspring

A

F. green, white, or variegated offspring

18
Q

Which is TRUE about Kearns-Sayre Syndrome (KSS)?

A. optic nerve degradation
B. mutation in electron transport chain proteins
C. mutation in ATPase
D. accumulation of pigments in retina

A

D. accumulation of pigments in retina

19
Q

Which is TRUE about mitochondrial DNA inheritance?

A. affected males pass on the genes
B. offspring show the characteristics of their female parent
C. only males are affected by the disease
D. A and B
E. B and C

A

B. offspring show the characteristics of their female parent

20
Q

Gradation of coat color in horses is an example of a:

A. continuous trait
B, meristic trait
c. polygenic trait
D. threshold trait

A

A. continuous trait

21
Q

Hairline in humans is an example of a:

A. continuous trait
B. meristic trait
C. polygenic trait
D, threshold trait

A

B. meristic trait

22
Q

A variation that represents the interaction between alleles.

A. additive variation
B. dominance variation
C. epistatic variation
D. A and B
E. A and C

A

B. dominance variation

23
Q

A variation that represents the interaction between genes at two or more loci.

A. additive variation
B. dominance variation
C. epistatic variation
D. A and B
E. A and C

A

C. epistatic variation

24
Q

Which of the following statements describe additive variation?

A. A given genotype is superior to another in one environment
B. Expression of a trait is not controlled by the other allele at the locus.
C. Expression of a trait is affected by the other allele at the locus.
D. Expression of a trait is affected by alleles at another loci.

A

B. Expression of a trait is not controlled by the other allele at the locus.

25
Q

Which of the following statements describe additive variation?

A. A given genotype is superior to another in one environment
B. Expression of a trait is not controlled by the other allele at the locus.
C. Expression of a trait is affected by the other allele at
the locus.
D. Expression of a trait is affected by alleles at another
loci.

A

B. Expression of a trait is not controlled by the other allele at the locus.

Genetics Lecture (7 decks)

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