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Chapter 12: Q. 10 (page 326)

The observable traits expressed by an organism are described as its ________. a. phenotype b. genotype c. alleles d. zygote

Short Answer

Expert verified

Option a is correct.

Step by step solution

01

Step 1. Introduction

Specific characteristics of an organism are known as traits. These traits can be determined by the gene, environment, or by both gene and environment.

02

Step 2. Explanation of the correct option

Option a is correct because the phenotype refers to the physical appearance for the specific feature.

03

Step 3. Explanation of the incorrect option

Option b is incorrect because genortype is a gentic constitution of any particular traits.

Option c is incorrect because allels refers to the alternative forms of the gene.

Option d is incorrect because zygote is a fertilized egg result form the fertilization of ova and sperms.

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Most popular questions from this chapter

A scientist pollinates a true-breeding pea plant with violet, terminal flowers with pollen from a true-breeding pea plant with white, axial flowers. Which of the following observations would most accurately describe the F2 generation?

a. 75% violet flowers; 75% terminal flowers

b. 75% white flowers in terminal position

c. 75% violet flowers; 75% axial flowers

d. 75% violet flowers in an axial position

Assuming no gene linkage, in a dihybrid cross of AABB x aabb with AaBb F1 heterozygotes, what is the ratio of the F1 gametes (AB, aB, Ab, ab) that will give rise to the F2 offspring?

a. 1:1:1:1

b. 1:3:3:1

c. 1:2:2:1

d. 4:3:2:1

Figure 12.12 What ratio of offspring would result from a cross between a white-eyed male and a female that is heterozygous for red eye color?

If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of?

a. dominance

b. codominance

c. multiple alleles

d. incomplete dominance

Why is it more efficient to perform a test cross with a homozygous recessive donor than a homozygous dominant donor? How could the same information still be found with a homozygous dominant donor?
See all solutions

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