<span>Human skin is one of the more important cooling systems. Unlike many other mammals, humans have sweat glands. These cool the surface of the skin by evaporating water. Body heat is carried to the surface of the skin by the circulatory system. Humans also have finer hair than other animals. We are actually as hairy as chimpanzees, but our hair is so fine it makes us appear to have none. This lack of dense hair allows the skin to evaporate sweat more efficiently. Another human cooling mechanism is our posture. Walking upright means only a small portion of the body is exposed to direct sun during the hottest part of the day. Our ancestors were thought to scavenge during this period because preditors had to escape the sun. Walking on 4 legs meant the entire surface of the back was exposed to the sun.A uniquely human adaptation to heat is the scalp. Blood vessels run directly from the surface of the brain through pores in the skull and out across the head and face. This serves to cool the brain. Humans have enromous brains which generate quite a lot of heat. This system of veins serves like a kind of radiator, keeping the brain from overheating. It also explains why head injuries tend to bleed so profusel</span>
Answer:
1 mint please
Explanation:
The diagram shows the life cycle of a chicken.
2
What does stage 3 show?
Because the stomach is lined by a mucous membrane (the gastric mucosa)
A cross between two linked genes was done in coupling configuration and in repulsion. In coupling, the recombination frequency is greater than 1/16 and in repulsion, the recombination frequency is less than 1/16
If the cross between two linked genes is in coupling, then the recombination frequency is greater than 1/16 having the genotype aabb and phenotype ab.
If the cross between two linked genes is in repulsion, then the recombination frequency is less than 1/16 having the genotype aabb and phenotype ab.
Coupling is the gamete entered having genes from identical parents having same inheritance.
Repulsion is the gamete entered from different parents having separate inheritance.
Genes in coupling configuration on a homologous chromosome have two wild alleles and two mutant alleles on the other homologous chromosome.
Genes in repulsion configuration have a wild allele on one gene and the second gene on other homologous chromosome having a mutant allele.
Learn more about Homologous chromosome here, brainly.com/question/27258467
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Answer:
There is no difference between Eukaryotic and prokaryotic codons. All 61 codons and 20 amino acids are same. Start codons are also same.
