Duh they need to drink water somehow
When old red blood cells rupture, the released hemoglobin is ingested by macrophages
The genotype is 
( Calico : Black : Black : orange )
The phenotype is 1 : 2 : 1 ( Calico : Black : orange )
<u>Explanation:</u>
Fur color is a co-dominant sex linked trait in cats.
The gene for fur color is present in the X-chromosome.
Males have 1 X chromosome and thus, they will have only 1 allele for the fur colour.
Females have 2 X chromosome and thus, they will have 2 alleles for the fur colour.
Considering, Orange fur color being the dominant trait and black color be the recessive one.
Male black cat = XᵇY
Female Calico cat = XBXᵇ
The cross performed is shown in the table attached:
According to the cross:
The genotype is ( Calico : Black : Black : orange )
The phenotype is 1 : 2 : 1 ( Calico : Black : orange )
Answer:
D. muscularis externa
Explanation:
The gastrointestinal tract or digestive tract consist of four main layers:
• Mucosa- consists of the epithelium together with glandular tissue and the lamina propria (connective tissue)
• Submuscosa- consists of fibrous connective tissue with larger blood vessels, lymphatics, nerves..
• Muscularis externa-smooth muscle layer that consists of three layers, responsible for movement (propulsion) and physical break down of the food
• Serosa-consists of connective tissue continuous with the peritoneum.
Explanation:
transmission of inner ear 2 determine pitch = 3 bones called OSSICLES.
11) malicious hammer
2) Incus
3) The stapes.
these 3 bones form a bridge from tympanic membrane 2 oval window.
sound travels thru oval window, enters cochlea in inner ear..
