PHYSIOLOGY
REPRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
shape of eyebrows
|
|
|
likes or dislikes
|
|
|
presence of freckles
|
|
|
colour of skin
|
Detailed explanation-1: -Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes. Some health conditions and diseases can be passed on genetically too. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB or O.
Detailed explanation-2: -Polygenic Inheritance: Human skin colour is a good example of polygenic (multiple gene) inheritance. A genotype with all “dominant” capital genes (AABBCC) has the maximum amount of melanin and very dark skin. A genotype with all “recessive” small case genes (aabbcc) has the lowest amount of melanin and very light skin.
Detailed explanation-3: -IT is not uncommon for two dark skinned persons to have a light skinned baby. Skin colour is a physical characteristic that is determined by genes inherited from one’s parents.