GENETICS DVM at Universiti Putra Malaysia | Flashcards & Summaries

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Lernmaterialien für GENETICS DVM an der Universiti Putra Malaysia

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. Linkage occurs when genes on the same chromosomes are:

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Located close together

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Goat and Cattle have 2N chromosome number of:

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60

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In a test cross a bull is mated to homozygous recessive cows and is confirmed a carrier of the recessive
allele when its progenies are:

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50% of dominant heterozygotes and 50% recessive homozygotes

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To estimate the frequency of a homozygous genotype in a population in Hardy-Weinburg equilibrium,
which value would be most useful?

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p2

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. Most of the genes on a male’s X chromosome have:

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No corresponding alleles on the Y chromosome

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If the template strand of DNA molecule consist of the sequence 3’-ATAGCGTAAGCC-5’, what will be the
RNA strand sequence produced from this piece of DNA?

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5’-UAUCGCAUUCGG-3’

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Father pass X-linked alleles to

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only and All of their daughters

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During meiosis daughter cells produced are

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Haploid

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Coat color in horses is controlled by chestnut and white color genes which are co-dominants and the
heterozygotes expresses the palamino color. What is the phenotypic ratio of offspring from the mating of a
white stallion and a palamino mare?

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1 palamino : 1 white

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Allele frequencies are expected to remain constant from one generation to the next in a Hardy-Weinburg
population. One mechanism that may cause allele frequencies to change is called “genetic drift” and results
when which of the following assumptions does not hold true?

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TESTE DEIN WISSEN

Large population

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TESTE DEIN WISSEN

If a sex-linked trait is due to a recessive allele, a male mammal will express the trait only if:

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He has a recessive allele on the X chromosomes

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TESTE DEIN WISSEN

If the population was determined to have an excessive number of both homozoygous genotypes and a
deficiency of the heterozygotes relative to Hardy-Weinburg expectations, which of the following assumptions
did not likely hold true for this isolated population?

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No selection

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Q:

. Linkage occurs when genes on the same chromosomes are:

A:

Located close together

Q:

Goat and Cattle have 2N chromosome number of:

A:

60

Q:

In a test cross a bull is mated to homozygous recessive cows and is confirmed a carrier of the recessive
allele when its progenies are:

A:

50% of dominant heterozygotes and 50% recessive homozygotes

Q:

To estimate the frequency of a homozygous genotype in a population in Hardy-Weinburg equilibrium,
which value would be most useful?

A:

p2

Q:

. Most of the genes on a male’s X chromosome have:

A:

No corresponding alleles on the Y chromosome

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Q:

If the template strand of DNA molecule consist of the sequence 3’-ATAGCGTAAGCC-5’, what will be the
RNA strand sequence produced from this piece of DNA?

A:

5’-UAUCGCAUUCGG-3’

Q:

Father pass X-linked alleles to

A:

only and All of their daughters

Q:

During meiosis daughter cells produced are

A:

Haploid

Q:

Coat color in horses is controlled by chestnut and white color genes which are co-dominants and the
heterozygotes expresses the palamino color. What is the phenotypic ratio of offspring from the mating of a
white stallion and a palamino mare?

A:

1 palamino : 1 white

Q:

Allele frequencies are expected to remain constant from one generation to the next in a Hardy-Weinburg
population. One mechanism that may cause allele frequencies to change is called “genetic drift” and results
when which of the following assumptions does not hold true?

A:

Large population

Q:

If a sex-linked trait is due to a recessive allele, a male mammal will express the trait only if:

A:

He has a recessive allele on the X chromosomes

Q:

If the population was determined to have an excessive number of both homozoygous genotypes and a
deficiency of the heterozygotes relative to Hardy-Weinburg expectations, which of the following assumptions
did not likely hold true for this isolated population?

A:

No selection

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