Answer:
A
Explanation:
O polygenic
O codominance
O dominance
O pleiotropy
Answer:
Pleiotropy
Explanation:
The pleiotropic is a type of genetic behaviour which influence and affect more than one trait. Sickle cell anemia disease is a type of pleiotropism. In sickle cell anaemia patients, haemoglobin A is entirely replaced with haemoglobin S. Such patients have the genotype HBs HBs. Heterozygotes who carry the sickle cell gene HBa HBs are said to have a condition called sickle cell trait thus the expression of two different genotypes by one single gene indicates pleiotropism.
Haemoglobin S crystallizes when oxygen concentration is low in capillaries making the red blood cells to assume a crescent or sickle shape. Such cells transport oxygen very poorly leading to anaemia.
1. football players or rugby players
2. basketball player or martial artists
3.rowers or triatheletes
a. muscular strength
b. endurance training
c. endurance and strength training
Answer:
football players or rugby players : endurance and strength training
basketball player or martial artists : muscular strength
rowers or triatheletes : endurance training
Explanation:
1. Football players or rugby players require to be physically active(stamina) and aerobically fit. This is because they have to play in the ground to cover long distances focusing on an object. This gives them tolerance and strength.
2. Muscle strength is important in basketball and martial arts because while gaining strength, speed, and endurance, you are also strengthening tendons and ligaments which will reduce the chances of injuries, such as sprains and tears.
3. Rowers or triathletes both are alternatives of racing that increase endurance training. Patience is key to cover a long distances on racing or running.
2: name two main groups of bacteria??
3: describe three ways that bacteria affect other organisms??
B) Genetically engineered proteins can help fight disease.
C)Quarter horses bred to compete in rodeos are fast and strong.
D) Mules cannot reproduce because they have an odd number of chromosomes.
Answer:
(D). Mules cannot reproduce because they have an odd number of chromosomes.
Explanation:
Cross species breeding may be defined as the process of breeding between two different species. For example, Mule is obtained by the breeding between male donkey and female horse.
Mules have odd number of chromosomes and they are sterile. This is because, odd number of chromosomes leads to non-disjunction and formation of abnormal chromosomal separation during gamete formation. Due to this, non-functional gametes are formed during meiosis and mules cannot reproduce.
Thus, the correct answer is option (D).