Hoàn thành các phép lai sau (chỉ xét trường hợp trội hoàn toàn): Phép lai Số kg F1 Số kh F1 Tỉ lệ kg F1 Tỉ lệ kh F1
P: AA x AA

G: A ↓ A

F1: AA

1 1 100%AA 100% trội.
P: AA x Aa

G:

F1:

P: AA x aa

G:

F1:

P: Aa x Aa

G: 1/2A ; 1/2a ↓ 1/2A ; 1/2a

F1: 1/4AA : 2/4Aa : 1/4aa

3 2 1AA : 2Aa : 1aa 3 trội : 1 lặn
P: Aa x aa

G:

F1:

P: aa x aa

G:

F1:

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.  

answer: your large intestine is about five feet (or 1.5 meters) long. the large intestine is much broader than the small intestine and takes a much straighter path through your belly

explanation: the small intestine also is known as small bowel, which is around 20 feet long while large intestine which is also called colon or large bowel, is only 1.5 m long in size. being the part of our digestive system, they differ in their structure as well in their functions too