Radiation therapy for cancer works because a cell's DNA is exposed during mitosis and most vulnerable to damage from radiation. Because cancer cells are uncontrollably undergoing mitosis, they die when exposed to the treatment. The common side effects of radiation treatment are hair loss and vomiting. What does this imply?

Radiation therapy for cancer works because a cell's DNA is exposed during mitosis and most vulnerable to damage from radiation. Because cancer cells...

What is the definition of "female"?

What is the definition of "female"? a) producing the female reproductive system b) producing the smaller, more motile gamete c) producing the larger,...

In most bacteria, the DNA:

In most bacteria, the DNA: a) is carried in a single linear chromosome. b) is wrapped around proteins called histones. c) is carried in multiple...

A karyotype reveals:

A karyotype reveals: a) the sex chromosomes but not the non-sex chromosomes. b) the number, shapes, and sizes of chromosomes in an individual cell. c)...

In ants, sex determination:

In ants, sex determination: a) is similar to that of humans, in which the father has one copy of each of two different sex chromosomes. b) is based...

Metafemales" are:

Metafemales" are: a) females with an XXX genotype. b) females with an XX genotype. c) females with an XXY genotype. d) females with an XY genotype. e)...

Crossing over takes place during:

Crossing over takes place during: a) anaphase I of meiosis. b) prophase I of mitosis. c) prophase I of mitosis and meiosis. d) prophase I of meiosis. e)...

The eukaryotic chromosome:

The eukaryotic chromosome: a) consists of a single linear strand of double-stranded DNA. b) consists of two linear strands of double-stranded DNA. c)...

Sister chromatids are:

Sister chromatids are: a) the result of crossing over. b) single-stranded. c) identical molecules of DNA resulting from replication. d) homologous...

In birds, sex determination:

In birds, sex determination: a) is opposite to that of humans, in that the mother has one copy of each of two different sex chromosomes. b) is similar...

Anaphase of mitosis occurs when:

Anaphase of mitosis occurs when: a) the chromatids begin to separate from the metaphase plate. b) the sister chromatids from the homologous pairs...

Somatic cells can include:

Somatic cells can include: a) kidney cells. b) brain cells. c) sperm cells. d) All of the above are correct. e) Both a) and b) are correct. Answer: Both...

Cytokinesis:

Cytokinesis: a) results in greater genetic diversity among daughter cells. b) occurs during mitosis but not meiosis. c) refers to the division of...

Nondisjunction:

Nondisjunction: a) is the unequal division of the genetic material during cell division. b) occurs only in prophase I of meiosis. c) is the cause...

The chromosomes of bacteria are:

The chromosomes of bacteria are: a) circular. b) capsular. c) tetrahedral. d) linear. e) sickle-shaped. Answer: a) circular...

During meiosis, chromatin:

During meiosis, chromatin: a) unwinds to allow tetrads to form. b) binds to the metaphase plate, enabling chromosome division. c) is the final DNA...

A karyotype:

A karyotype: a) can be used to diagnose Down syndrome in humans. b) reveals the autosomes but not the sex chromosomes. c) can be used to determine...

Eukaryotic cells can divide by:

Eukaryotic cells can divide by: a) segregation only. b) replication only. c) mitosis only. d) meiosis only. e) both mitosis and meiosis. Answer: e)...

During meiosis but NOT during mitosis:

During meiosis but NOT during mitosis: a) two identical daughter cells are produced. b) chromosomes line up in the center of the cell during metaphase. c)...

Mitosis results in:

Mitosis results in: a) gametes. b) daughter cells with twice as much genetic material and a unique collection of alleles. c) daughter cells with...

A fruit is most commonly

A fruit is most commonly A) a mature ovary. B) a thickened style. C) an enlarged ovule. D) a modified root. E) a mature female gametophyte. Ans...

The fruit has light, fibrous plumes.

The fruit has light, fibrous plumes. A) animal skin, fur, or feathers B) animal digestive tract C) water currents D) gravity and terrain E) air c...

The fruit contains an air bubble.

The fruit contains an air bubble. A) animal skin, fur, or feathers B) animal digestive tract C) water currents D) gravity and terrain E) air curr...

The fruit is covered with spines or hooks.

The fruit is covered with spines or hooks. A) animal skin, fur, or feathers B) animal digestive tract C) water currents D) gravity and terrain E)...

The fruit of the mistletoe, a parasitic angiosperm, is a one-seeded berry. In members of the genus Viscum, the outside of the seed is viscous (sticky), which permits the seed to adhere to surfaces, such as the branches of host plants or the beaks of birds. What should be expected of the fruit if the viscosity of Viscum seeds is primarily an adaptation for dispersal rather than an adaptation for infecting host plant tissues?

The fruit of the mistletoe, a parasitic angiosperm, is a one-seeded berry. In members of the genus Viscum, the outside of the seed is viscous (sticky),...

Among plants known as legumes (beans, peas, alfalfa, clover, etc.) the seeds are contained in a fruit that is itself called a legume, better known as a pod. Upon opening such pods, it is commonly observed that some ovules have become mature seeds, whereas other ovules have not. Thus, which of these statements is/are true?

Among plants known as legumes (beans, peas, alfalfa, clover, etc.) the seeds are contained in a fruit that is itself called a legume, better known as...

Carpels and stamens are

Carpels and stamens are A) sporophyte plants in their own right. B) gametophyte plants in their own right. C) gametes. D) spores. E) modified spo...

The shell of an animal egg

The shell of an animal egg A) endosperm B) pollen tube and sperm nuclei C) carpels D) fruit E) integuments Answer: ...