BIOL30001 Lecture Notes - Lecture 16: Fetus, Blastocyst, Yolk

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greymarten981

13 Aug 2018

School

University of Melbourne

Department

Biology

Course

BIOL30001

Professor

Mark Green

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Document Summary

Laura parry interested in comparing between oviparity and viviparity. Role of placenta the main role is nutrition exchange it has to get rid of urea and waste products. Mechanisms that involve the placenta that prevents the rejection cytokines prevent the rejection. Membrances called the chorion, amnion and the choriaon vitelline placenta. Cvp the various cavitites amiontic cavity, the yolk sac cavity and this is an extra embryonic coelem. White is the yolk sac cavity and in the pro-amniotic cavity is the amniotic fluid there are cavities embryonic disk in the dotted. Formation of extra-embryonic membranes and placenta where the emryo sits. Grosser"s classification: placental types the depth of invasion human: and the dog is similar. What happens when this doesn"t occur strucutre of spiral arteries is important sprial arteries exist in non pregnant women but are modified when she becomes pregnant. When the blastocyst arrive does the uterus changes and adapts.

Related Questions

Many advances in genetic engineering, primarily thanks to the federally backed Human Genome Project, are allowing human beings to affect their natural skills and abilities.While the most obvious and practical use of genetic information is its application to genetic disorders, other uses and abuses of genetic technology are present. For example, the marketing of genes by young women who are donating their eggs to infertile couples and/or brokers.According to the CDC's 2013 report (Centers for Disease Control), there are approximately 467 clinics in the United States and in the same year 1.5% of all infants born in the U.S were conceived using ART (Assisted Reproductive technology). In these clinics, a young woman can donate eggs from her ovum and receive compensations between$5,000 and $10,000. While compensations above $10,000are generally considered unethical, young women who have attended Ivy League schools are especially sought after because of the strength of their genetic heritage and may receive as much as $50,000 from prospective parents and brokers.

Genetic information, knowledge and practice will not regress. The world is going to move forward with many applications of such knowledge. Given this, discuss the moral and ethical implications of the current and future uses of genetic databases. What are the advantages of such databases? What are the disadvantages? In your research/literature based opinion, how should/could the databases be managed in order to maintain ethically sound conditions?

At least one cited reference

Q6. Identify 2 scientific (genetic) reasons why scientists can justify working with model organisms when the ârealâ interest is in the genetics of other organisms.

7. The things that are True about animal breeding areâ¦(check all that are correct)

___a. animal breeders need to select the parents carefully

___b. breeding can only be done between 2 animals of the same species.

___c. animal breeders have a goal of improving a trait or traits in their breed or species of animal

___d. they all have the same traits they want to improve, no matter what the animal species or breed.

___e. animal breeders are only interested in traits for which selection is obvious and the genetic control or inheritance is easy to predict

___f. animal breeding is only done on domestic animals not wild animals

___g. animal breeding would be much easier if there was no variation within a species in the genes that control their traits.

___h. although slightly more difficult, breeding between 2 different species (ex. cat and dogs) can be done just as breeding within the same species.

Q8. Describe two differences and two similarities between plant breeding and animal breeding.

1. In October of 2003, a raging wildfire swept through themountain ecosystems in Southern California, burning everything inits path to the ground and driving away all of the animals. Inorder for the mountain ecosystem to establish itself, which memberof the food web has to return first?

Deer

Coyotes

Snake

Grasses

2. Suppose you conduct an experiment which simulates glacialrecession over time. What is the dependent variable in thisexperiment?

Glacial mass

Sunlight

The season

Time

3. How many dependent variables can be tested during any singleexperiment?

4. The effectiveness of a medication containing growth hormonesis tested on a group of young male rabbits 3 weeks of age. The bestcontrol group would be:

Any group of rabbits

A group of male rabbits, three weeks old, not given themedication

A group of female rabbits, three weeks old, not given themedication

A mixed group of male/female rabbits, three weeks old, not giventhe medication

No control is required; just measure whether the rabbitsgrew

5. When writing a lab report or a research paper, you need toshow what the difference is between the

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BIOL30001 Lecture Notes - Lecture 16: Fetus, Blastocyst, Yolk

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