If a gene is found only on the X chromosome and not the Y chromosome, it is
said to be a sex-linked trait. Because the
gene controlling the trait is located on the sex chromosome, sex linkage is
linked to the gender of the individual. Usually such genes are found on the
X chromosome. The Y chromosome is thus missing such genes (See Diagram above.).
The result is that females will have two copies of the sex-linked gene while
males will only have one copy of this gene. If the gene is recessive, then males
only need one such recessive gene to have a sex-linked trait rather than the
customary two recessive genes for traits that are not sex-linked. This is why
males exhibit some traits more frequently than females.
<span>Examples of Sex-linked Traits: </span>
Red-green colorblindness
Male Pattern Baldness
Hemophilia
<span>Duchenne Muscular Dystrophy</span>
Answer:
Byzantine art originated and evolved from the Christianized Greek culture of the Eastern Roman Empire; content from both Christianity and classical Greek mythology were artistically expressed through Hellenistic modes of style and iconography.
The answer is B. Warm current
move away from the equator towards the
poles while cold currents concurrently move towards the equator. This
process is known as thermohaline circulation. The cold currents due to higher
density move in the great depth of the oceans
while the warmer currents are on the surface due to their relatively lower density.
Answer:
The interaction between two organisms in which one usually benefits is called commensalism.
Explanation:
hope it helps :)
Answer:
Since the gene mutates at a rate of 0.76 base pairs every 17.1 million years, to find out the time it would take for 1 base pair to mutate can be calculated by dividing 17.1 million years by 0.76
17,100,000 ÷ 0.76 = 22.5 million years
The following equation can be used to describe this:
μ = [(r2/N2) − (r1/N1)] × ln (N2/N1) = (f1 − f2) × ln (N2/N1)
r1 = the observed number of mutants at time point 1
r2 = the observed number of mutants at the next time point
N1 and N2 are the numbers of cells at time points 1 and 2
Hope that answers the question, have a great day!
