For this week's CRQ, you are to design your own genetic cross between a female and a male. Be sure to include each of the following within your cross and then you will need to provide the solution as well.

1. What are the dominant and recessive traits in cross?
2. Is the male homozygous dominant, homozygous recessive, or heterozygous?
3. Is the female homozygous dominant, homozygous recessive, or heterozygous?

In your answer, provide the following as well:
1. genotypes and phenotypes for parent and offspring

If you want to insert an image of your cross, you may as well but NOT required.

Please write in complete sentences.

In humans the separated ear feature is dominant and the attached ear is recessive, thus establishing a genetic cross between a man with attached ears and a woman with separated ears.

Explanation:

1. What are the dominant and recessive traits in cross?

For the morphological character of the ear, "A" represents separate ear (dominant) and attached ear (recessive).

2. Is the male homozygous dominant, homozygous recessive, or heterozygous?

♂ Homozygous recessive (aa)

It is known that the united ear - being the recessive allele - must manifest as recessive homozygous.

3. Is the female homozygous dominant, homozygous recessive, or heterozygous?

⧬ Heterozygous (Aa)

It can be assumed that the woman is heterozygous for this characteristic.

Genotypes and phenotypes for parent and offspring

The genotypes and phenotypes of the parents and offspring, according to the crossing, would be:

Parents:

Genotypes aa & Aa  

Phenotypes father with united ears and mother with separated ears.

Alleles       a     a

A              Aa   Aa

a              aa    aa

Offspring genotypes and phenotypes

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!

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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