Gene A converts compound A (green) to compound B (blue). Gene B converts compound B to compound C (red). These compounds determine the color of the individual. In a cross between a double heterozygote and an all recessive individual, what proportion of green to red offspring should be seen?

The options

a. 3:4

b. 3:1

c. 4:3

d. 4:9

e. 1:3

The CORRECT ANSWER IS e.

e. 1:3

Explanation:

Compound A (green) , GENE A is transformed to Compound B (blue)

Compound B (blue) , GENE B is transformed to Compound C (red)

After gene A as transformed the compund A to compound B, gene B can can transform the compound B to C. Therefore, once gene A is forming blue colour from green, gene B as the capability to form red colour from the blue one.

Lets cross AaBb X AaBb (the product of the cross is shown in the attached image. )

we will have the following genotypes:

AABB-1

AABb- 2

AaBB-2

AaBb-4

We obtain a functional copy of A and B gene from the cross. Thus, the transformation of colour will proceed from green to red and they will form red colour, giving us 9 red colour.

AA bb -1

Aa bb -2

The functional B gene is absent in these organism while the funtional A gene can be seen, thus only blue colour will be formed or 3 individual will give the blue colour.

aa BB -1

aa Bb -2

aa bb-1

these set of individual will not give or form any colour as they do not possess the functional A gene which is a requirement for starting the cascade of transforming the compounds.

Therefore, the blue to red offspring will be

3:9 or 1:3

The CORRECT ANSWER is e.

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a