Objective Questions

What event marks the transition from the morula to the blastula stage?

Which of the following best describes the function of the corpus luteum in the …

How does internal fertilization benefit terrestrial organisms?

Which phase of the menstrual cycle is characterized by the thickening of the en…

In embryo development, which process establishes the three germ layers?

In the light-dependent reactions of photosynthesis, what is the final electron …

Humans have __________ pairs of autosomes and one pair of sex chromosomes.

In mammals, females have two __________ chromosomes (XX).

Males have one X and one __________ chromosome (XY).

A key gene on the Y chromosome is the __________-determining factor (TDF).

Hereditary information is encoded in __________.

An example of budding is in stony __________.

The male gamete is the __________.

It stores the cell's __________.

Meiosis enables the production of __________.

Division of the cytoplasm is called:

TDF promotes development of the __________ phenotype.

Genetic factors causing congenital anomalies can be:

In the context of teratogens, 'thalidomide' is an example of what category?

Fission also occurs in some multicellular organisms like the __________.

The offspring's genetic characteristics are derived from two __________ organis…

The female gamete (egg) is __________ and non-motile.

The male gamete (sperm) is generally much __________ and motile.

For many animals, finding a __________ can be challenging.

Some adaptations blur the distinction between male and female, an example commo…

The evolutionary solution for limited mating opportunities is often __________.

Any two hermaphrodites can mate, with each animal donating and receiving ______…

An example of a hermaphroditic animal is the __________.

Some hermaphrodites, like corals, can also __________-fertilize.

Genetics is a relatively young branch of __________ science.

The study of genetics started with the work of __________.

The plant Mendel used in his experiments was __________.

List three modern branches of genetics: Cytogenetics, Molecular Genetics, and _…

In 1900, Mendel's work was independently rediscovered by three scientists: Carl…

Mendel's findings became known as Mendelism or Mendelian __________.

Genetic principles are the rules governing the biological phenomenon of _______…

Heredity involves the transmission of characteristics from parents to offspring…

The biochemical information for heredity is carried in units called __________.

The term 'Genetics' was coined by __________ in 1905.

The term 'Gene' was coined by __________ in 1909.

A gene is a hereditary determining factor and consists of a continuous segment …

In eukaryotes, a gene occupies a specific position on a chromosome called a ___…

In turner's syndrome, the individual is a sterile male

A __________ allele will always express itself.

A __________ is heterozygous for TWO pairs of alleles at two loci.

A __________ allele will only express in the absence of a dominant allele.

What is the scientific term for the process when an embryo is formed and develo…

Where does fertilization typically occur in humans?

What is the name of the first cell formed after fertilization?

Approximately how large is a zygote thirty hours after conception?

What is the term for the mitotic division of cells in the early embryo?

What structure is a solid ball of about 32 cells that resembles a raspberry?

What is produced by the repeated mitotic division of a zygote and consists of a…

What is the fastening of the embryo to the wall of the uterus called?

Where does implantation take place?

What is the developmental stage from the start of cleavage until the ninth week…

At what cell state does the embryo enter the uterus?

What process involves a series of cell migrations to form the three primary cel…

Which primary germ layer forms the skin, hair, sweat glands, epithelium, brain,…

Which primary germ layer forms the digestive and respiratory systems, liver, pa…

Which primary germ layer forms body muscles, cartilage, bone, blood, reproducti…

When does the embryo begin to form organs?

What is the size of a one-month-old embryo?

By which week does the embryo become a fetus?

What happens by the end of the eighth week of development?

When does the fetus activate gene pathways for sex determination?

What is the size of a 4-month-old fetus?

During which trimester do the circulatory and respiratory systems mature in pre…

When do maternal antibodies pass to the fetus, conferring temporary immunity?

What is the approximate length of a full-term fetus at 9 months?

What is the series of events that expel the infant from the uterus called?

Which hormone, released by the pituitary gland, contributes to uterine contract…

When is gender determined in human development?

When do the gonads begin to form?

Which of the following occurs by the end of the first trimester?

What develops during the second trimester according to the notes?

What is a key development during the third trimester?

What structure is formed by the repeated mitotic division of a zygote and prece…

What nourishes the embryo before implantation?

At 20 days after fertilization, what is the size of the embryo?

What is visible on a two-month-old fetus?

Which hormone's rising levels help initiate labor?

What does the placenta release to contribute to labor contractions?

A dominant allele masks or suppresses the expression of a __________ allele.

Dominant alleles are symbolized with __________ letters.

Recessive alleles are symbolized with __________ letters.

For the trait of height, the dominant character is __________, symbolized by (T…

The __________ is the genetic makeup of an organism.

The __________ is the physical appearance of an organism.

The phenotype is the __________ of the genotype.

Phenotype is produced by the genotype and its interaction with __________ facto…

For the height trait, the genotypes can be TT, Tt, or __________.

Phenotype is the expression of the __________.

Which mitochondrial process directly leads to water production?

A __________ condition occurs when a gene is present in only one copy.

An example of hemizygosity is genes on the __________ chromosome in males.

__________ is the ability of an allele to express itself in both homozygous and…

The theory of natural selection was proposed by:

Biology comprises two words

Which of the following macromolecules contains the most energy per gram?