Apopulation of captive organisms is produced from two breeding pairs. the males of both breeding pairs possess a y-linked allele coding for white fur on their ears. which statement correctly describes how the y-linked trait will affect the phenotypes seen in the population?

a.
all males and females in the population will have white ear fur.
b.
all females in the population will have white ear fur, but no males will.
c.
all males and females with two copies of the y-linked allele will have white ear fur.
d.
all males in the population will have white ear fur, but no females will.

The correct answer is: D.  All males in the population will have white ear fur, but no females will.

When the trait (in this case, fur color) is Y-linked, it means it will never occur in females.

The Mendelian concept of dominant and recessive do not apply to Y-linked traits, because only one allele (on the Y) is ever present (in male individual). Because only one allele is present, those males are called hemizygous.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."

picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

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