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Chapter 12: Q. 28 (page 328)

Can a human male be a carrier of red-green color blindness?

Short Answer

Expert verified

Males are just not primarily characterized as carriers of red-green vision problems.

Step by step solution

01

Step. 1 Introduction

The most prevalent kind of color deficiency is red-green colour impairment. One may very well have trouble recognizing various shades of red, green, and yellow if you do have this form of color vision. Deuteranopia is also a term for this.

02

Step. 2 Explanation

No, males cannot be the carriers of red-green color blindness, as color blindness is X-linked. Only females with two Xc genes become colorblind in both directions. Only the combination of color-blind males and a color-blind or carrier woman may result in this case. Because males lack a second X chromosome that may conceal the characteristic, all males having an Xc gene shall become colorblind in both red and green.

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Most popular questions from this chapter

The forked line and probability methods make use of what probability rule?

a. test cross

b. product rule

c. monohybrid rule

d. sum rule

Which of the following situations does not follow the Law of Independent Assortment?

a. A blind man and a brunette woman produce three offspring over time, all of who have blind hair.

b. A white cow crossed with a brown bull produces roan cattle.

c. Mating a hog with a sow produces six female piglets.

d. Men are more likely to experience hemophilia than women.

Figure 12.16 In pea plants, purple flowers (P) are dominant to white flowers (p) and yellow peas (Y) are dominant to green peas (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares do you need to do a Punnett square analysis of this cross?

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

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