Question

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

the number of dominant alleles
the number of dominant alleles

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

the combination of its alleles
the combination of its alleles

its phenotype

9 answers

its phenotype
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 result in the trait of shortness in pea plants.
They result in the trait of shortness in pea plants.

They are indicated by lowercase letters.
They are expressed whenever present.
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
The genotype that would lead to a spotted phenotype in this dog breed is bb.
Question
A Punnett square is a mathematical model of genetic outcomes based on which of these?(1 point)
Responses

probability
probability

exact outcomes
exact outcomes

genetic markers
genetic markers

traits of prior offspring
probability
What is the main benefit of genetic biodiversity?(1 point)
Responses

Genetic biodiversity helps populations adapt to environmental changes.
Genetic biodiversity helps populations adapt to environmental changes.

Genetic biodiversity helps populations avoid predators.
Genetic biodiversity helps populations avoid predators.

Genetic biodiversity helps individuals produce more offspring.
Genetic biodiversity helps individuals produce more offspring.

Genetic biodiversity helps individuals compete with each other.
Genetic biodiversity helps populations adapt to environmental changes.