Question

DO THEM ALL AND BE CLEAR

Question 11 pts

When Mohan and Begum matted and had cubs, all cubs were what coat color(s)?

3:1 orange to white

1:1 orange

All orange coated

2:1 orange to white

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Question 21 pts

One outcome of the blending model of inheritance would be

that there would be no phenotypic variation left within a species over time

Evolution would proceed more quickly

only some traits could deb inherited

only continuously variable traits would bend

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Question 31 pts

What organism did Mendel use as his study system?

Brassica plants

A rapid cycling pea plant

Garden peas

Cabbage plants

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Question 41 pts

Height in Brassica plants is the _______________ and tall and dwarf are the __________.

trait | characters

Gene | phenotypes

character | traits

phenotypes | genes

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Question 51 pts

When Mendel crossed true breeding purple flowered plants with true-breeding white flowered plants, 100% of the F1s were purple flowered. Which best explains this result?

dominance & recessive alleles - that the purple allele is the dominant allele and the white the recessive allele

epistasis - that the white allele has affected the expression of the purple allele

hybridization - that the purple flowered plants were crossed with the white flowered plants means the strongest color will always show in the F1

Pleiotropy - that the purple allele has affected other alleles yielding a purple flower

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Question 61 pts

Mendel always found a 3:1 phenotypic ratio in the F2 generation

True

False

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Question 71 pts

The 3:1 ratio that Mendel often found and indeed any phenotypic ratio found in offspring when examining Mendelian traits can be explained by what process? In other words the mathematical explanation of the ratios is because of what fundamental process?

Probability - inheritance follows the random probability rules which always average out in the ratios we observe

Meiosis - alleles segregate so 50% of gametes carry one allele and 50% carry the other

Dominance - that the dominant allele always makes the recessive allele

Punnet squares - because there are 4 squares each at 25%

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Question 81 pts

If both alleles at a locus are the same, what term describes this?

Homozygous

Heterozygous

homologous

homoallelic

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Question 91 pts

The law of segregation helps explain what result?

true-breeding

dominance and recessiveness

Allelic frequencies

The phenotypic ratios

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Question 101 pts

Many diet drinks have a warning on the container if they contain aspartame sweetner.

True

False

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Question 111 pts

PKU is an inherited genetic disease. Individuals with PKU are unable to eliminate both aspartic acid and phenylalanine (this part of true: these are the two amino acids that make up aspartame).

True

False

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Question 121 pts

Dominant alleles are always the "stronger" phenotype - bigger, taller, darker and seldom the weaker phenotype.

True

False

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Question 131 pts

When true-breeding red flower colored plants were crossed with true-breeding white flowered plants, the offspring were all pink. How is this explained?

Phenotypic plasticity

Epistasis

Blending

Incomplete dominance

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Question 141 pts

The ABO blood group system illustrates two non-Mendelian properties, which two are these?

codominance

incomplete dominance

pleiotropy

epistasis

multiple alleles

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Question 151 pts

The inherited disease cystic fibrosis has several phenotypes, but is caused by a single gene with 2 alleles. Which term describes this?

incomplete dominance

Epistasis

Pleiotropy

genotypes

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Question 161 pts

Skin color in humans is a/an

dominant trait

codominant trait

environmentally determined phenotype

polygenic trait

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Question 171 pts

Many diseases have BOTH a genetic and environmental cause to them. The lifestyle you lead will impact the diseases you develop.

True

False

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Question 181 pts

Someone who does not have the symptoms of cystic fibrosis and is not a carrier of the recessive allele has offspring with a carrier of the cystic fibrosis allele but does not have symptoms. What is the probability they will have offspring who has cystic fibrosis?

50%

0%

25%

75%

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Question 191 pts

Flower color in pea plants is the _______________ and purple and white flowers are the __________.

Gene | phenotypes

Phenotype | genes

Character | traits

Trait | characters

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Question 201 pts

The law of segregation applies to non-Mendelian traits.

True

False

Answer 1

Please find the answers below:

Answer 11: Choice 3 (Mohan, a white tiger was mated with Begum, a normal colored tigress and all the litters were normal in color)

Answer 21: Choice 1 (since the phenotypes blend in the blending-model of inheritance, there will be no visible difference between the offsprings)

Answer 31: Choice 3 (Mendel utilized garden peas for his initial experiments on genetic inheritance)

Answer 41: Choice 3 (height is a trait, having two characters, either tall or dwarf)