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DMST 244 Obstetrics and Gyn Sonography 1 > Mod 5.1 Fetal Embryology Definitions > Flashcards

Mod 5.1 Fetal Embryology Definitions Flashcards

1
Q

What is a Haploid?

A

A single set of unpaired chromosomes (23)

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2
Q

If we have a haploid with 46 chromosomes it does what?

A

Divides into 2 new cells, each with 23 chromosomes

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3
Q

What is a diploid?

A

Paired chromosomes

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4
Q

How many chromosomes does a diploid have?

A

46 chromosomes

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5
Q

What is a triploid?

A

3 complete chromosome sets (69 chromosomes)

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6
Q

What is a trisomy?

A

A condition where there is one extra chromosomes present in each cell additional to the normal diploid

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7
Q

Trisomy 21 means what?

A

An extra chromosome on chromosome 21 (Down syndrome)

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8
Q

For trisomy karyotypes are now what?

A

47xx or xy

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9
Q

Karyotypes is how chromosomes are what?

A

Expressed

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10
Q

What is mitosis?

A

Process of nuclear division where cellular material is equally divided between both daughter cells

**All cells except gamete cells (sex cells) **

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11
Q

What is meiosis?

A

The process that reduces the number of chromosomes in gametes to half (haploid)

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12
Q

What is a chromosome?

A

A threadlike nucleoprotein structure within the nucleus of a cell that contains DNA

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13
Q

What is DNA?

A

A double standard nuclei acid that is a constituent of chromosomes

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14
Q

What does DNA contains?

A

contains hereditary information coded in specific sequences

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15
Q

What is a gene?

A

A hereditary unit that carries hereditary traits

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16
Q

What are genes used for?

A

For self reproducing

17
Q

What is the arrangement of DNA?

A

Chromosome

18
Q

What is a karyotype?

A

Chromosomes set of an individual

19
Q

How are karyotype described in terms of both what?

A

Number and structure of chromosomes

20
Q

What does a karyotype a representation of?

A

Chromosomes set in a diagram

DMST 244 Obstetrics and Gyn Sonography 1 (22 decks)

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