Question

Question 9 Not yet answered The four genes in the following cross are independent from one another. Capital letters indicate dominant alleles. If the cross produces 160 individuals, how many of them will express the dominant phenotype for all the four genes at the same time? AaBBDdEe X aaBbddEe Points out of 2.50 P Flag question Answer:

Answer 1

Answer:

9).

AaBBDdEe x aaBbddEe ---Parents

Aa x aa = Aa (1/2) & aa (1/2)

BB x Bb = B_ (1)

Dd x dd = Dd (1/2) & dd (1/2)

Ee x Ee = E_ (3/4) & dd (1/4)

Proportion of dominant phenotype for all the four genes at the same time = A_B_D_E_ = ½ * 1 * ½ * ¾ = 3/16

No. of dominant phenotype for all the four genes at the same time = 3/16 * 160 = 30

10). D. ATP hydrolysis requires energy input provided by enzymes and therefore is an endergonic process

Explanation:

Since ATP hydrolysis releases energy, ATP synthesis must require an input of free energy.