In rapidly changing environments, why is utilizing sexual reproduction better than asexual reproduction?

sexual reproduction leads to more diversity in offspring, increasing chances of survival

asexual reproduction leads to more diversity in offspring, increasing chances of survival

offspring are produced more quickly in sexual reproduction, so they can reproduce fast enough to keep up with the environment

offspring are produced with little energy in asexual reproduction, so more energy is available to keep up with the environment

Why is binary fission and mitosis a favorable form of reproduction for some organisms?

it enables species to rapidly populate an environment that has stable conditions

it allows species to avoid harmful mutations

it allows species to increase genetic variability

it allows species to withstand long periods of unstable environmental conditions

What causes mutations?

a change in the DNA sequence, which affects the structure of the protein

a change in the trait, which affects the DNA sequence

a change in the trait, which affects the structure of the protein

a change in the protein, which affects the sequence of DNA

Which of these is KEY when it comes to proteins and other structures in the body?

structure determines DNA sequences

Genetically modified foods make the food less appetizing to insects and more appetizing to consumers. Some inserted genes allow plants to survive heavy doses of chemicals that farmers use to control weeds. Which concern is related to the genetically modified plants described above?

are genetically modified plants potentially harmful to humans due to exposure to heavy chemical sprays?

do genetically modified plants constitute a new species?

do genetically modified plants cost less to develop other than crops?

are genetically modified plants potentially harmful to humans due to exposure to insects?

Which answer BEST describes the result of this mutation

the alternation of a single nucleotide encodes for a different amino acid

the entire amino acid sequence is changed

the RNA strand doesn't code for the correct amino acids

the change in amino acids shortens the polypeptide sequence

Food science is one area where biotechnology has made great advancements, but some are still skeptical. What argument best supports the idea that advancements in food science are beneficial to society?

creating advancements that reduce the cost and resources needed for food products

making plants immune to various bacteria

creating plants that are pest resistant and herbicide resistant

reducing the need for large-scale farms and traditional farming

Bt (Bacillus thuringiensis) is a bacteria that occurs in caterpillars. It creates crystal proteins that kill insects. Through science, we have been able to isolate the proteins and insert them in species of cotton. How does affect the cotton's DNA?

it provides a new genetic sequence that makes spores insect resistant

it improves the cotton's genetic code by producing new DNA proteins

it mutates the DNA by changing how the cotton is transcribed and translated

A red flower is crossed with a white flower. This exhibits incomplete dominance. Which statement is true about the offspring produced? Select all that apply.

all of the offspring have pink flowers

the red and white genes blend to form offspring with pink flowers

the red and white genes blend to form offspring with red and white spots on their flowers

all of the offspring are red and white spotted

Which of these would introduce variation within a species? Select all that apply.

when cells divide, they make incomplete copies of their DNA

certain chemicals or radiation that make DNA break down (or mutate)

combining paternal and maternal genes during fertilization

cells creating identical copies of themselves during mitosis

What can be determined from certain dihybrid crosses? Select all that apply.

which traits are represented by certain letters (B, b, etc.)

what percent of offspring are likely to have a certain trait

what offspring will be produced in the next generation

Mrs. B claims that populations that reproduce asexually are better able to survive in environments where disease has been introduced. Is she correct? Which statement best evaluates her claim?

Mrs. B is incorrect. A genetically identical population increases vulnerability to diseases

Mrs. B is incorrect. The population would grow too slow to replace organisms that died from the disease

Mrs. B is correct. The population would be genetically diverse, allowing organisms to become immune

Mrs. B is correct. The large population size would allow more organisms to become immune

Asexual reproduction leads to...

genetically identical offspring

Sexual reproduction leads to...

genetically identical offspring

In caterpillar species, the allele for blue stripes (B) is DOMINANT to the allele for green stripes (b). A parent caterpillar with green stripes produces offspring with blue stripes. Which statement(s) are correct about the genotypes of the parents and offspring?

Offspring with the dominant trait have the genotype Bb

The parent caterpillar has to have the genotype bb

One parent caterpillar had to pass down a dominant trait (B) to the offspring

both parents have the recessive genotype (bb)

When analyzing diagrams that display how genetic disorders are passed down from parents to offspring, what question(s) can be answered by using the diagrams?

what percentage of offspring are affected by the genetic disorder?

what is the best treatment for a person with the genetic disorder?

what is the life expectancy of a person with the genetic disorder

which offspring will also have offspring affected by the genetic disorder?

Students in Mrs. B's biology class are studying a cross between a brown mouse and a white mouse. In a dihybrid cross, they compare fur color and tail length. Which question below can students answer by analyzing the dihybrid cross?

Are the alleles for fur color and tail length inherited independently of one another?

How many offspring with white fur are female?

Is there a mutation that occurs to cause some offspring to have no tail?

How does crossing over increase genetic diversity?

because it results in NEW genetic combinations of genes within chromosomes, so offspring are different from one another

by preventing genetic mutations from occurring within genes

by ensuring that offspring receive the dominant allele only

because it creates uneven amounts of genetic material

Two heterozygous purple flowers are crossed (Bb x Bb). What questions could you answer by analyzing the offspring of this cross OR the Punnett square as a whole?

can 2 purple plants create a white plant?

What are the genotypes of the parents?

how many alleles to offspring receive from each parent?

which offspring received a mutation?

BIO U3 Study Guide

Authored by Anna Brigance

Biology

10th Grade

NGSS covered

Used 12+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the structure of DNA?

double-stranded

single-stranded

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the structure of RNA?

double-stranded

single-stranded

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the backbone of DNA?

deoxyribose and phosphate

ribose and phosphate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the backbone of RNA?

deoxyribose and phosphate

ribose and phosphate

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is DNA found?

nucleus only

nucleus and cytoplasm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is RNA found?

nucleus only

nucleus and cytoplasm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of DNA?

storing and transmitting genetic information

transferring genetic information for protein creation

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BIO U3 Study Guide

What is the structure of DNA?

What is the structure of RNA?

What is the backbone of DNA?

What is the backbone of RNA?

Where is DNA found?

Where is RNA found?

What is the purpose of DNA?

What is the purpose of RNA?

In rapidly changing environments, why is utilizing sexual reproduction better than asexual reproduction?

Why is binary fission and mitosis a favorable form of reproduction for some organisms?

Access all questions and much more by creating a free account

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