Sickle-Cell disease Quick Check

Which of the following may be caused by sickle-cell disease?

1. Anemia 2. Blockages in the capillaries of the respiratory system 3. Pain in the joints of the body

A genetic disease has which of the following characteristics?

1. It can be passed from one generation to the next 2. It is due to changes in DNA of an individual

The work of which of the following researcher(s) used radioactively labeled material to determine whether proteins or DNA are the genetic material? a. Hershey and Chase b. Griffith c. Avery d. Watson and Crick

Hershey and Chase

PCR differs from DNA replication in which of the following? a. It uses primers to target specific segments of the DNA molecule b. it uses a thermostable DNA polymerase c. It can produce large numbers of copies of a specific gene

a. It uses primers to target specific segments of the DNA molecule b. it uses a thermostable DNA polymerase c. It can produce large numbers of copies of a specific gene

A DNA molecule has the codons TACGATTTTGCA. Using the genetic code, what is the sequence of amino acids that would be expressed by this code? a. Met - Leu - Lys - Arg b. Thr - Ser - Glu - Leu c. Tyr - Asp - Phe - Ala d. Asn - Ala - Met - Val

a. Met - Leu - Lys - Arg

Which of the following statements is correct regarding sexual reproduction? a. Spermatogenesis produces four haploid sperm cells b. Meiosis produces two identical daughter cells c. Meiosis occurs in all of the cells of the humany body d. Crossing-over changes the number of chromosomes in the daughter cells of meiosis

a. Spermatogenesis produces four haploid sperm cells

Which of the following statements are correct regarding a DNA molecule? a. it is a double-helix b. the nucleotide base pairs between DNA strands are linked by hydrogen bonds c. the two DNA strands are oriented in the same direction d. in a DNA molecule %A = %T and %G = %C

a. it is a double-helix b. the nucleotide base pairs between DNA strands are linked by hydrogen bonds d. in a DNA molecule %A = %T and %G = %C

The interaction of the respiratory system and circulatory system occurs where?

alveoli of the lungs

What is an allele? a. A protein involved in the formation of chromosomes b. A genetic variation of a gene c. A replicated chromosome d. The location of a gene on a chromosome

b. A genetic variation of a gene

During DNA replication, which enzyme breaks the hydrogen bonds between the nucleotides in the DNA strands? a. DNA polymerase b. Helicase c. DNA ligase d. None of the above are correct

b. Helicase -What are the other's functions

During which of the following is genetic variation introduced into the cells that will become the gametes? a. Mitosis b. Metaphase 1 c. Prophase 1 d. Spermatogenesis

b. Metaphase 1 c. Prophase 1

The Information in which of the following is identical? a. homologous chromosomes b. sister chromatids c. alleles of the same gene d. all the above are identical

b. Sister chromatids

In an individual with Type A blood marries a person with Type AB blood, which blood types may be present in their offspring? a. Type O b. Type A c. Type AB d. Type B

b. Type A c. Type AB d. Type B

Mendel's law of segregation proposed which of the following? a. Gametes contain a single copy of each trait b. Individuals possess two copies of each trait c. Alleles separate during gamete function d. All of the above

d. All of the above

An intermediate phenotype in a heterozygous individual is an indication of which pattern of inheritance? a. Codominance b. Environmental influences c. Multiple alleles d. Incomplete dominance

d. Incomplete dominance

PCR is the same as DNA replication in which of the following? a. it can produce large numbers of copies of a specific gene b. it uses a thermostable DNA polymerase c. it uses primers to target specific segments of the DNA molecule d. It copies DNA

d. It copies DNA

Which of the following terms refers to the physical characteristics associated with a trait? a. Homozygous b. Pedigree c. Genotype d. Phenotype

d. Phenotype

Which of the following is not involved in the process of transcription? a. Messenger RNA (mRNA) b. RNA polymerase c. DNA d. Ribosomes

d. Ribosomes

Which of the following is part of a hemoglobin molecule?

four globin protiens and a heme group

Which is the basic unit of inheritance?

gene

Which of the following is the definition of anemia?

low oxygen concentrations in the body