I think the answer is D but i could be wrong
Answer:
B. False
Explanation:
No system of the body works in isolation. So, option (B) is correct.
Answer:
Option A
Explanation:
Given -
Man has X-linked recessive trait . Thus its genotype can be represented as
YX'
Woman has normal vision with homozygous genotype i.e "XX"
A cross is carried out between the above two parents thereby producing following offspring -
Y X’
X XY XX’
X XY XX’
Out of four offspring two are boy "XY" which do not have Red-Green Color blindness
While the two daughters "XX' " have Red-Green Color blindness
Thus, all the daughters produced have Red-Green Color blindness. Thus the chance of having a daughter with color blindness is 100 percent
Option A
Gametes of the parents would be:
PpTt : PT ; Pt ; pT ; pt
Pptt : Pt ; Pt; pt ; pt
You can do this easily using the FOIL method on each genotype. Just like in math, F stands for first; O stands for outside; I stands for inside; and L stands for last. I'll do one parent genotype and maybe you will understand how this was done:
GENOTYPE: <em>PpTt</em>
<em>F- </em><em>irst of each pair. P and T</em>
P p T t
Gamete: <em>PT</em>
<em>O </em><em>- utside allele of the pair. P and t</em>
P p T t
Gamete: Pt
<em>I - </em><em>inside alleles of the pair. p and T</em>
P p T t
Gamete: pT
<em>L</em><em>-ast or end allele of each pair. p and t</em>
P p T t
Gamete: pt
