Answer:
23.oxygen diffuses through alveoli walls to the blood capillaries
24.blood capillaries surround alveoli
25. pumps blood which carry all the body minerals all over the body from the lungs and to all body parts
It is evident from the pedigree that this disease only affects the males. This leads us to the conclusion that this trait must be a case of the Y-linked inheritance.
The trait we are examining is located on the Y chromosomes that is present only in males and inherited from fathers to sons.
First, we will elaborate the terms that are being used.
Heterozygous:
This means that the organism has a set of alleles which are different from one another. One copy may be for the dominant trait and the other for the recessive one.
Homozygous:
The organism has two copies of the same allele
Dominant:
An allele that will express itself even if only one copy of it is present. These are usually represented by capital letters.
Recessive:
An allele that requires both copies to be expressed. These are usually represented by lower-case letters.
A: Heterozygous
B: homozygous recessive
C: Homozygous dominant
D: Homozygous recessive
E: Homozygous dominant
