Show:
Heredity
Meiosis
Mitosis
Gene
DNA
100
the passing of traits from parent to offspring
What is heredity ?
100
The cell formed through fertilization of an egg by a sperm is called a/an A. gamete. B. sperm cell. C. zygote. D. egg cell. E. ovum.
C.zygote
100
Which of the following is true of mitosis in a diploid cell? a.It results in 2 haploid daughter cells. b.It involves replication of the cell's DNA. c.It results in daughter cells who are genetically identical, but physically smaller, than the original cell. d.Bill Gates has way more money than all the employees and students at GRCC combined.
c.It results in daughter cells who are genetically identical, but physically smaller, than the original cell.
100
Is a gene a triplet of consecutive DNA nucleotides?
A gene is not a triplet of DNA nucleotides with their respective nitrogen-containing bases, like AAG or CGT. The nucleotide triplets may be pieces of genes but not genes.
100
What is the structure of DNA?
a double helix
200
False. Boys and girls get the same amount of hereditary information from each parent.
True or False? Girls get more hereditary information from their moms than boys do boys get more from their dads than girls do
200
If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. A. 4 B. 8 C. 12 D. 16 E. 24
D.24
200
From here on in, anything is fair game. Ready? Is crossing over (swapping of segments of DNA between homologous chromosomes) seen with mitosis? a.Yes, it is a normal part of mitosis. b.No, crossing over is not associated with mitosis. c.Yes, but it only occurs in fetal cells. d.None of those above.
B. No, crossing over is not associated with mitosis
200
What is a gene?
A gene is a sequence of DNA nucleotides that codifies the production of a protein.
200
Who discovered the double helix structure of DNA?
James Watson and Francis Crick
300
How much hereditary information do you get from each parent?
Equal amounts.
300
If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? A. 3 B. 6 C. 12 D. 24
C.12
300
During which stage does DNA replication occur? a.Prophase. b.Anaphase. c.Metaphase. d.None of those above
D. None of these above
300
How is the concept of chromosome related to the concept of the gene?
A chromosome is a DNA molecule. A chromosome may contain several different genes and also DNA portions that are not genes.
300
What are the four nitrogen bases of DNA?
Guanine paired with Cytosine, Adenine paired withThymine
400
The passing of traits from parents to offspring is called: A.hand me downs B.purebred C.heredity D.hybrid
C.Heredity
400
During which stage of meiosis does crossing-over occur? A. prophase I of meiosis I B. anaphase I of meiosis II C. telophase I of meiosis I D. prophase II of meiosis II E. anaphase II of meiosis I
A. prophase I of meiosis I
400
Which of the following is correct? a.The chromosomes shorten and thicken during prophase. b.The nucleolus reappears following telophase. c.Interphase is characterized by little cellular activity, as the cell is resting to prepare for the next mitotic event. d.All of the above.
a.The chromosomes shorten and thicken during prophase.
400
What is an allele of a gene?
A phenotype is every observable characteristic of a living being conditioned by its genes. Some phenotypes may be altered by nongenetic factors (for example, artificial hair coloring). Specific phenotypes are also called phenotypical traits.
400
How many strands of DNA are there?
two
500
An organism with two different alleles for a trait is said to be: A.recessive B.hybrid C.dominant D.purebred An organism with two different alleles for a trait is said to be: A.recessive B.hybrid C.dominant D.purebred
An organism with two different alleles for a trait is said to be: A.recessive B.hybrid C.dominant D.purebred
500
The overall function of meiosis includes all of the following EXCEPT A. gamete production. B. reduction of chromosome number (from 2N to N). C. providing genetic variation in sexually reproducing organisms. D. growth of the overall individual.
D. growth of the overall individual.
500
Match the terms with the appropriate stages in the answer: Migration, Shortening and Thickening, Cytokinesis, Prophase. a.Telophase, Anaphase, Prophase, centrioles forming. b.Anaphase, Prophase, Metaphase, microtubules. c.Anaphase, Prophase, Telophase, centrioles forming. d.Metaphase, Anaphase, Telophase, microtubules.
C. Anaphase, Prophase, Telophase, centrioles forming.
500
What is the difference between homozygosity and heterozygosity?
Homozygosity occurs when an individual has two identical alleles of a gene, for example, AA or aa. Heterozygosity occurs when an individual has two different alleles of the same gene, in the example, Aa.
500
What is Thymine paired with in DNA?
Adenine