Quiz by Julia Miranda, created more than 1 year ago

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Biology: Genetics Review

Biology: Genetics Review

Question 1 of 25

1

The diploid cell that the sperm and egg make when fertilized is called the...

Select one of the following:

Zygote
Homologous chromosome
Meiosis

Explanation

Question 2 of 25

1

Oogenesis yields...

Select one of the following:

4 sperm cells
A zygote
1 egg cell and 3 small polar bodies

Explanation

Question 3 of 25

1

Spermatogenesis yields...

Select one of the following:

1 egg
3 polar bodies
4 similar-sized sperm cells

Explanation

Question 4 of 25

1

Meiosis is the...

Select one of the following:

Replication and division of somatic cells
Replication and division of chromosomes
Replication and division of sex cells

Explanation

Question 5 of 25

1

One sex cell (1 sperm of 1 egg) is...

Select one of the following:

Haploid
Diploid

Explanation

Question 6 of 25

1

What separates during meiosis I?

Select one of the following:

Sister chromatids
Homologous chromosomes
Homozygous alleles

Explanation

Question 7 of 25

1

What separates during meiosis II?

Select one of the following:

Homologous chromosomes
Sister chromatids
Cells

Explanation

Question 8 of 25

1

What is synapsis?

Select one of the following:

The pairing of 2 homologous chromosomes during meiosis
The division of the cytoplasm
Exchange of genetic material

Explanation

Question 9 of 25

1

What is "crossing over"?

Select one of the following:

The pairing of 2 homologous chromosomes
The separation of dominant and recessive alleles
Exchange of genetic material between homologous chromosomes which results in recombinant chromosomes

Explanation

Question 10 of 25

1

During Metaphase I...

Select one of the following:

Homozygous alleles line up
Sister chromatids line up single-file
Homologous pairs line up in the middle

Explanation

Question 11 of 25

1

During Metaphase II...

Select one of the following:

Homologous pairs line up in the middle
Sister chromatids line up single-file
Recessive alleles appear in the phenotype

Explanation

Question 12 of 25

1

What does meiosis ultimately yield?

Select one of the following:

Four sperm cells
2 diploid cells
4 haploid cells

Explanation

Question 13 of 25

1

What does dominant mean?

Select one of the following:

Inherited characteristics which appear in an organism
Inherited characteristics carried by an organism
A genetic disease

Explanation

Question 14 of 25

1

What is the difference between genotype and phenotype?

Select one of the following:

Genotype is the physical or visible characteristics; phenotype is the genetic makeup
Genotype is the sex cells; phenotype is the somatic cells
Genotype is the genetic makeup; phenotype is the visible or physical characteristics

Explanation

Question 15 of 25

1

What is an allele?

Select one of the following:

Another word for gametes (sex cells)
One homologous chromosome
An alternative form of a gene

Explanation

Question 16 of 25

1

What is the difference between heterozygous and homozygous?

Select one of the following:

Homozygous means that the alleles controlling a characteristic are the same; heterozygous means they are different
Homozygous means the alleles controlling a characteristic are different; heterozygous means they are the same
Homozygous means that the chromosomes are defective; heterozygous means they are normal

Explanation

Question 17 of 25

1

What is a Punnett Square?

Select one of the following:

A fun little square you draw when you're bored
A chart that shows different sex cells
A diagram showing all the possible outcomes of a genetic cross between two individuals

Explanation

Question 18 of 25

1

What is Mendel's Law of Dominance?

Select one of the following:

Mendel is the supreme ruler of everyone, especially geneticists
Gene pairs separate during meiosis and recombine randomly at fertilization
Dominant genes mask recessive genes in heterozygous conditions

Explanation

Question 19 of 25

1

What is Mendel's Law of Segregation?

Select one of the following:

Dominant genes mask recessive genes in heterozygous conditions
Jeans of different colors cannot be near each other in your closet
Gene pairs separate during meiosis and recombine randomly at fertilization

Explanation

Question 20 of 25

1

What is incomplete dominance?

Select one of the following:

When genes cannot agree on where to go out to dinner
Pattern of inheritance where neither allele is dominant. Both alleles contribute to the phenotype
When the genotypes do not match the phenotypes

Explanation

Question 21 of 25

1

What is codominance?

Select one of the following:

Pattern of inheritance where neither allele is dominant
Pattern of inheritance where both alleles are dominant
Genetic equality

Explanation

Question 22 of 25

1

What are multiple alleles?

Select one of the following:

When there are multiple alleles for a trait
Where is are at least 10 different alleles for one trait
When one allele is responsible for several different traits

Explanation

Question 23 of 25

1

Where are linked genes carried?

Select one of the following:

One different chromosomes
In different cells
On the same chromosome

Explanation

Question 24 of 25

1

Where are unlinked genes carried?

Select one of the following:

On the same chromosomes and inherited together
On different cells and not even interacting
On different chromosomes and show independent assortment

Explanation

Question 25 of 25

1

What is a sex-linked trait, and who discovered them?

Select one of the following:

A trait which always appears no matter what, discovered by Gregor Mendel
A recessive trait, discovered by Copernicus
Genes that are carried on sex chromosomes, discovered by Thomas H. Morgan

Explanation