Alleles are different versions of a _______________. chromosome phenotype genoty

Question

Alleles are different versions of a _______________.

chromosome

phenotype

genotype

gene

Question 2

Select one answer.

10 points

Which of the following is true of a diploid organism?

It has two of each gene.

It has two of each chromosome.

It has two alleles of each gene.

All of the above.

None of the above.

Question 3

Select one answer.

10 points

The next three questions are based on the following information.

In humans, the ability to roll the tongue (T) is dominant over the inability to do so (t). Suppose Mike, who can roll his tongue, and Jeannie, who cannot roll her tongue, have a child, Benjamin.

Part 1 of 3: If Mike’s mother was able to roll her tongue but his father was not able to roll his, then what is the probability that Benjamin will be able to roll his tongue?

75%

50%

100%

0%

Question 4

Select one answer.

10 points

Part 2 of 3: What is the probability that Benjamin will be homozygous recessive?

100%

0%

75%

50%

Question 5

Select one answer.

10 points

Part 3 of 3: What is the probability that Benjamin will be homozygous dominant?

100%

50%

75%

0%

Question 6

Select one answer.

10 points

List all possible gametes that can be produced from a cell that has the following genotype: AaBBDd.

ABD, abd

ABD, ABd, AbD, Abd, aBD, aBd, abD, abd

A, a, B, D, d

ABD, ABd, aBD, aBd

Question 7

Select one answer.

10 points

Homozygous is a term that can describe a(n) _____________.

genotype

phenotype

heterozygous

allele

Question 8

Select one answer.

10 points

Describe the importance of independent assortment: ________________________.

will assort independently of each other

will sort to the same gamete

are called alleles

All of these are true

Question 9

Select one answer.

10 points

An individual that expresses the dominant trait of a dominant/recessive gene

must be homozygous

must be heterozygous

can be either homozygous or heterozygous

Question 10

Select one answer.

10 points

Peter gets his blood tested and finds out that he is B+. This test identified a

Chromosome

Genotype

Phenotype

DNA

Explanation / Answer

1. gene

2. It has two of each chromosome.

3. 50%

4.  50%

5. 50%

6.ABD, ABd, aBD, aBd

7. genotype

8.will assort independently of each other

9. must be heterozygous

10. Phenotype

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