# Baby blood type must same as mother????

Baby blood type must same as mother????If same as father ,any problem???

### 2 個解答

• ?
Lv 5
1 十年前
最愛解答

:)

At a glance, it looks simple but actually the blood types of the baby varies and could have a lot of combination. It really depends on the genetic content of the parents.

Genetic Content of the blood types

Type A = AA or AO

Type B= BB or BB

Type O= must be OO

Type AB= must AB

Scenario 1

Both of parents are Type O

The baby will receive an O gene from both of the parents

i.e. The genetic content of the baby = OO which is blood type O.

Scenario 2

Both of the parents are Type A but also AA genetically

The baby will receive an A gene from both of the parents

i.e. The genetic content of the baby = AA which is blood type A.

Scenario 3

Both of the parents are Type A but also AO genetically

The baby will receive either an A or O gene from father and mother

i.e. The genetic content of the baby

= AA which is blood type A.

= AO which is blood type A

= OO which is blood type O

Their ratio= AA: AO: OO =2:1: 1

But both AA & AO belong to Blood Type A

Therefore Type A : Type O = 3:1

(will continue later)

2007-02-07 21:15:59 補充：

Scenario 4Both of the parents are Type B but also BB geneticallyThe baby will receive an B gene from both of the parentsi.e. The genetic content of the baby = BB which is blood type B.

2007-02-07 21:27:20 補充：

Scenario 5Its parents are Type B but also BO geneticallyIt receives either an B or O gene from dad & momi.e. The genetic content of the baby= BB type B or = BO type B or = OO type OTheir ratio= BB: BO: OO = 2:1: 1, But both BB & BO belong to Type B Type B : Type O = 3:1

2007-02-07 21:31:18 補充：

Scenario 6Its parents are Type A but genetically different AA & AOThe baby must belong to Type AScenario 7 Its parents are Type B but genetically different BB & BOThe baby must belong to Type B

2007-02-07 22:58:09 補充：

Scenario 8Parents are Type AB Baby must be AA: BB: AB in ratio of 1:1:2 Type A: Type B: Type AB = 1:1:2

2007-02-07 23:14:23 補充：

Scenario 9Parents are Type O and Type A Baby will be all Type A (since parents are OO &r AA)or Baby will be either Type O ot Type A in ratio 1:1 (since parents are OO & AO)

2007-02-07 23:15:27 補充：

Scenario 10Parents are Type O and Type B&gt; Baby will be all Type B (since parents are OO & BB)or&gt;Baby will be either Type O ot Type B in ratio 1:1 (since parents are OO & BO)

2007-02-07 23:18:26 補充：

Scenario 11Parents are Type AB and Type A Baby will belong to Type AB or Type A (since parents are AB & AA)or Baby will be either Type AB, Type A or Type B in ratio 1:2:1 (since parents are AB & AO)

2007-02-07 23:20:27 補充：

Scenario 12Parents are Type AB and Type B Baby will belong to Type AB or Type B in ratio 1:1 (since parents are AB & BB)or Baby will be either Type AB, Type B or Type A in ratio 1:2:1 (since parents are AB & BO)

2007-02-07 23:24:07 補充：

Scenario 13Parents are Type AB and Type O Baby will belong to Type A or Type B in ratio 1:1(since parents are AB & OO)

2007-02-07 23:42:59 補充：

From above, it can be easily concluded that the baby&#39;s blood type MAY NOT be same as that of mother. In some of the cases, the baby&#39;s blood type is idential to that of his father.

2007-02-07 23:43:57 補充：

eg.1 (scenario 9) Mother--Type O & Father---Type A Baby can either be Type O(same as Mother) or Type A (same as Father)eg.2 (scenario 6 ) Mother (AA) & Father (AO) are Type A Baby can be all Type A (same as Mother & Father)

資料來源： memory from the biology lessons
• 1 十年前

Either same as mother or father, chance is 50/50.

Same as father of course no problem, it&#39;s very normal.