Child development

 

 

Read the article than answer these 3 questions.
here’s the link to the article.
http://www.apa.org/monitor/apr04/second.aspx

What is the possible flaw in the assumption made by twin research that identical and fraternal twins who are raised in the same home have the same environment?

Despite the limitations of twin research, how are twin studies useful?

Which type of genetic study is expected to add to what we learn from twin studies in
the future?

Understanding Chromosomal Abnormalities
Please review the following link and article at the March of Dimes website, then answer the following 4 questions.

http://www.marchofdimes.com/Baby/birthdefects_chromosomal.html

How many children in the United States are born with a chromosomal abnormality?

What causes chromosomal abnormalities, and what happens to most embryos with the
wrong number of chromosomes?

Do all children with the same chromosomal abnormality have the same
characteristics?

If one of your children has a chromosomal abnormality, will all of your other children
have the same condition?

Sample Solution

uthern Brown Kiwi (Tokoeka) is a species of Kiwi found in the far South of New Zealand. It is grouped into 2 subspecies; the first is somewhat common (population of 20,000) and is found on Stewart Island, and the second is found in the southwest of the South Island, with a population of 7,000 altogether. There are different populations of this subspecies found in Fiordland (north and south distinctively) and another near Haast. The ones from Haast are generally smaller. Haast is an area in the south of the West Coast region, named after famous German geologist Julius von Haast, who was significant in early geological surveys of New Zealand, and also founded the Canterbury Museum. The group of Tokoeka found near Haast (Haast Tokoeka) are critically endangered, with a population of less than 300.
The Haast Tokoeka are based in Haast, in the south of the West Coast region. The Tokoeka have a range of habitats suitable, for example, the Stewart Island Tokoeka are sometimes found in sand dunes. In Haast, the Haast Tokoeka tend to live near mountains, in grasslands, shrublands, and sub-tropic forests. They prefer to live in denser vegetation, where they make their burrows. In these habitats, they will eat small invertebrates, insects, worms, grubs, seeds, and larvae. The Haast Tokoeka also has predators, like possums, stoats, ferrets, dogs, and cats, which will attack the Tokoeka (including juvenile Tokoeka). The stoats and possums will also eat the eggs. The Haast Tokoeka is a nocturnal bird (meaning it is active during the night), and it’s believed that this is to avoid predators.
The Haast Tokoeka does belong to the bird class, although it is one of few that cannot fly. The Kiwi genus has the scientific name Apteryx (Greek for “without wings”). It wasn’t necessary for this bird to fly, as its habitat, in dense vegetation, has most of its food on the ground, as well as the burrows they

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