Arecessive x-linked gene mutation is known to generate premature baldness in males but is without effect in women. if a heterozygous female marries an affected male, what proportion of all their children is expected to be prematurely bald?

Explanation:

Let "XB " represents the dominant allele for no baldness

and let "Xb " represents the recessive premature male-pattern baldness

Genotype of affected male is Xb Y

Genotype of heterozygous female XB  Xb

Now when the above male and female are crossed, the following offspring are produced

Xb Y * XB  Xb

XB  Xb, XB Y, Xb Xb, Xb Y

Since, this Xb allele is only expressed in males, therefore females will not be affected by it

Hence, out of 4 offspring only one male offspring with "XbY" genotype will have premature baldness

answer; ///(statins)/aka as hmg coa

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.