9G 2nd midterm exam 2021 22 review - 3 | Baamboozle - Baamboozle

Deduce the genotypes of the couple in generation I.

both were heterozygous

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A fruit fly has 8 chromosomes; how many possible types of fertilized eggs could be formed by the crossing of two fruit flies?

2^4 x 2^4 = 256

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Which phase is this?

anaphase 2

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__________ are the unspecialized cells that can develop into specialized cells under right conditions.

Stem cells

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thief

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shark

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rocket

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lifesaver

Give 15 points!

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Which phase is this?

metaphase 2

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If individual III-4 gets married with a homozygous dominant individual, how many percent of chance that the offspring will be affected by the disorder?

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The uncontrolled growth and division of cells cause by the failure of cell cycle regulation is called __________.

cancer

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eraser

Reset score!

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gift

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fairy

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thief

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Describe the genotype of individual II-3.

Homozygous dominant

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How many affected female(s) is/are there in generation II? Name the individual(s).

one. II-2

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heart

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seesaw

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rocket

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lifesaver

Give 10 points!

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Crossing over happens in which phase of meiosis?

Prophase I

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B is the dominant allele for big eyes and b is the recessive allele for small eyes.What is the genotypic ratio of a cross between two heterozygous individual?

BB:Bb:bb = 1:2:1

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Is this a dominant or recessive genetic disorder? How do you know?

Recessive genetic disorder, because there are carriers.

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B is the dominant allele for big eyes and b is the recessive allele for small eyes.What is the phenotypic ratio of a cross between two heterozygous individual?

Big eyes:small eyes = 3:1

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