For most genes on the human X chromosome, 100% of XY males with mutant allele on the X chromosome will express the mutant phenotype.
50 % of human sperm cells that carry an X chromosome. There is 50 % chances that daughter of any male will not carry the gene and can't pass it on and 50 % chance that sons do not have the gene and it will be healthy. 50% chance that son have inherited the gene and express the trait or disorder.
If a Egg is fertilizes by sperm with X chromosome then zygote will be a female ' XX'. If the Egg is fertilizes by sperm with Y chromosome , then zygote will be male 'XY'.
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Letter B is the correct option
Behavior of an individual that may result in negative consequences
The thermal energy can be defined as the type of kinetic energy which is generated due to the motions of the particles. This motion generates a temperature which can be measured easily. The type of thermal energy which flows from one substance to another when the temperature of the two substances is different is known as heat.
Hence, the blank can be filled with 'heat'.
The answer is the hypothalamus. It is a portion
of the brain that comprises a quantity of small nuclei with an assortment of
functions. One of the most significant purpose of the hypothalamus is
to connect the nervous system to the endocrine system through the pituitary
gland.