Post Test L2 Flashcards

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1
Q

According to Mendel’s experiments, the dominant trait will result in about ______________ of the offsprings in the second generation.

A

Three-quarters

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2
Q

An offspring’s observable traits are called its ____________________ while its genetic material is referred to as _________________.

A

phenotype, genotype

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3
Q

A single trait is controlled by two expressions of the same gene called _________________

A

Alleles

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4
Q

Egg and sperm cells are also called ______________ , and each contains half the usual number of chromosomes.

A

gametes

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5
Q

During fertilization, the resulting ______________ contains a full set of chromosomes.

A

Zygote

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6
Q

The four nucleotide bases in DNA are adenine, thymine, cytosine, and ______________.

A

guanine

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7
Q

Accidental errors in individual genes are called ______________ .

A

mutations

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8
Q

______________ are stretches of DNA that control the process of gene expression.

A

Promoters

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9
Q

______________ mechanisms such as DNA methylation and histone remodeling may control genes.

A

Epigenetic

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10
Q

The shape of DNA can be influenced by the change of shape of the adjacent ______________.

A

histones

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11
Q

. All chromosomes except ______________ chromosomes come in matched pairs.

A

Sex

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12
Q

The first phase of gene expression involves the transcription of DNA to RNA, and the second phase
involves the ______________ of RNA base-sequence code into a sequence of amino acids.

A

translation

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13
Q

The Human Genome Project discovered that only ______________ percent of human DNA contains protein-encoding genes.

A

1

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