Mutations can have __________ (choose all that apply).

little or no effect on the organism.

beneficial/helpful effect by allowing an organism to better survive within an environment

A segment of DNA is represented in the illustration. How is information for a specific protein carried on the DNA molecule?

In the double-helix shape of the condensed chromosome

In the ratio of adenines to thymines

As a pattern of phosphates and sugars

In Texas Longhorn cattle, coat coloration is an inherited trait. What is the genetic basis of coat-color variation in Texas Longhorn cattle?

Differences in the nucleotide sequences of genes

Differences in the numbers of chromosomes in cells

Differences in the diets of individual cattle

Differences in the environmental conditions of different geographic areas

The fact that a strain of yeast with a certain defective gene can use the human version of the gene to repair itself is evidence that yeast and humans —

depend on the same food supply.

A partial DNA segment and an mRNA codon chart are shown. What amino acid sequence is encoded in the partial DNA segment?

Serine – Threonine – Tyrosine

Serine – Threonine – Methionine

Serine – Alanine– Methionine

In 1917 the biologist Thomas Hunt Morgan conducted studies in which he kept some caterpillars in the dark and placed some others under red, green, or blue lights. Exposure to red light produced butterflies with brightly colored wings. Exposure to green light resulted in dark-colored wings. Exposure to blue light or no light resulted in pale-colored wings. What was the most likely conclusion of Morgan's research?

The genes regulating wing color in butterflies are influenced by environmental factors.

The pigment in butterfly wings absorbs light from the environment.

The phenotypic expression of wing shape depends on color pigmentation in butterflies.

Caterpillars exposed to red and green light are healthier than caterpillars exposed to no light or blue light.

E. coli has three genes that each code for different enzymes that break down lactose. Scientists conducted investigations about the production of these enzymes using samples of E. coli . Their results are shown in the table. Which conclusion about the production of the enzymes can be determined by analyzing the scientists' results?

Gene expression for the enzymes was controlled by the presence of lactose.

Gene expression for the enzymes was controlled by the temperature of lactose.

The genes for the enzymes were expressed in equal amounts during both experiments.

The genes for the enzymes were mutated before being expressed by the presence of lactose.

Exposure to the building material asbestos has been linked to certain types of cancers. Asbestos causes mutations in the p53 gene, which controls tumor suppression.Which statement best explains why people with cancer due to asbestos exposure do not pass the mutation on to their offspring?

The mutation occurred in somatic cells.

The mutation occurred in gametic cells.

Which statements explain how a mutation in a somatic cell is different from a mutation that occurs in gametes?

Somatic cell mutations are generally not passed to offspring.Gamete mutations are usually passed to offspring.

Somatic cell mutations occur in cells that give rise to gametes.Gamete mutations occur in cells that result in apoptosis.

Somatic cell mutations are maintained in the gene pool.Gamete mutations are expelled from the gene pool.

Somatic cell mutations will not be expressed by the individual that contains the mutation.Gamete mutations will be expressed by the individual.

Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?

75% hairy stems: 25% hairless stems

50% hairy stems: 50% hairless stems

The four butterflies in the illustrations represent the offspring in the F 1 generation. Which statement is best supported by the phenotypes of these offspring?

The F 1 generation is the result of a dihybrid cross.

The F 1 generation is composed only of males.

Two of the offspring in the F 1 generation will not be able to reproduce.

Two of the offspring in the F 1 generation will experience a spontaneous mutation.

Lobo Bio RC2

Authored by Alisa McElroy

Biology

9th - 12th Grade

NGSS covered

Used 25+ times

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Content View

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40 questions

Show all answers

LABELLING QUESTION

1 min • 1 pt

Label the image

phosphate group

deoxyribose

ribose

nitrogenous base

Tags

NGSS.HS-LS1-1

FILL IN THE BLANKS QUESTION

1 min • 1 pt

The image is a(n) (a) .

Tags

NGSS.HS-LS3-1

LABELLING QUESTION

1 min • 1 pt

Identify the nucleic acids.

DNA

RNA

Tags

NGSS.HS-LS1-1

DROPDOWN QUESTION

1 min • 1 pt

The image is of a(n) (a) cell.

eukaryotic

bacteria

prokaryotic

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

LABELLING QUESTION

1 min • 1 pt

Label the organization of DNA in a cell

Gene

Nucleus

Chromosome

Tags

NGSS.HS-LS3-1

MATCH QUESTION

45 sec • 1 pt

Match the following process to its description.

Translation

Transcription

Replication

MATCH QUESTION

1 min • 1 pt

Match the image to the type of nucleic acid.

transfer RNA

ribosomal RNA

messenger RNA

Tags

NGSS.HS-LS1-1

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Lobo Bio RC2

Label the image

The image is a(n) (a) .

Identify the nucleic acids.

The image is of a(n) (a) cell.

Label the organization of DNA in a cell

Match the following process to its description.

Match the image to the type of nucleic acid.

The image shows the process of (a) .

The image shows the process of (a) .

Label the image.

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