A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)

Question

Responses

The manual is a chromosome.
The manual is a chromosome.

The interlocking bricks are the chromosomes.
The interlocking bricks are the chromosomes.

Each set of instructions is a protein.
Each set of instructions is a protein.

Each structure is a gene.

Answer 1

In the context of using the scenario of building structures with interlocking bricks as a model for genetic information, the correct statement is:

The manual is a chromosome.

In this analogy:

• The manual represents the entire set of genetic information, similar to how a chromosome contains many genes.
• The interlocking bricks would represent genes or basic units of genetic information that can be combined in various ways to create different structures (proteins).
• Each structure built using the bricks could represent a specific protein or trait as a result of the combination of genes.

Therefore, the correct match is that "the manual is a chromosome."

Answer 2

How are chromosomes and genes alike?(1 point)
Responses

They are both part of DNA.
They are both part of DNA.

They both encode a single protein.
They both encode a single protein.

They are both found on chromatids.
They are both found on chromatids.

They both contain genetic material.

Answer 3

The correct statement about how chromosomes and genes are alike is:

They both contain genetic material.

This is true because:

• Chromosomes are structures made of DNA that contain many genes, and they hold the genetic information necessary for the development and functioning of an organism.
• Genes are specific sequences of DNA found on chromosomes that code for particular proteins or traits.

Both chromosomes and genes play critical roles in heredity and the overall functioning of living organisms, and they both contain genetic information.

Answer 4

In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr?(1 point)
Responses

slightly wrinkled
slightly wrinkled

some round and some wrinkled
some round and some wrinkled

wrinkled
wrinkled

round

Answer 5

The phenotype of a pea plant with the genotype Rr (where R is the dominant allele for round peas and r is the recessive allele for wrinkled peas) is:

round

Since the allele for round peas (R) is dominant, the presence of at least one dominant allele (R) means the phenotype will express the dominant trait, which is round peas.

Answer 6

What determines a trait of an organism?(1 point)
Responses

its phenotype
its phenotype

the number of copies of the gene
the number of copies of the gene

the number of dominant alleles
the number of dominant alleles

the combination of its alleles

Answer 7

The correct statement about what determines a trait of an organism is:

the combination of its alleles.

This is because the trait expressed in an organism (such as flower color, height, etc.) is influenced by the specific alleles (versions of a gene) present and how they interact. The combination of dominant and recessive alleles will determine the organism's phenotype, but it is the combination itself that dictates which traits are expressed.

Answer 8

Which statement is accurate about dominant alleles?(1 point)
Responses

They are expressed only when a recessive allele is not present.
They are expressed only when a recessive allele is not present.

They are expressed whenever present.
They are expressed whenever present.

They are indicated by lowercase letters.
They are indicated by lowercase letters.

They result in the trait of shortness in pea plants.

Answer 9

The accurate statement about dominant alleles is:

They are expressed whenever present.

This means that if a dominant allele is present in the genotype (whether in a homozygous dominant or heterozygous combination), it will be expressed in the phenotype, regardless of the presence of a recessive allele.

Answer 10

Consider the following scenario:

In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype?

(1 point)
Responses

BB and bb
BB and  bb

Bb 
Bb 

bb
bb

BB

Answer 11

The genotype that would lead to a spotted phenotype in this dog breed is:

bb

In this scenario, the allele B for a black coat is dominant, while the allele b for a spotted coat is recessive. Therefore, only dogs with the genotype bb (homozygous recessive) will display the spotted coat phenotype. Dogs with genotypes BB or Bb would have a black coat phenotype.