Exam 2: Biological Foundations: Heredity, Prenatal Development, and Birth

The period of the foetus is the longest period of prenatal development.

Sipho and Siya have the exact same genes. This indicates that they must be

What began as a single fertilised egg has just separated into two distinct eggs. This indicates the formation of ____ twins that has occurred during the ____ period of development.

While characterised as a progressive and fatal disorder, symptoms of Huntington's disease can be eliminated through a special diet.

If tallness is dominant and designated as 'T', and shortness is recessive and designated as 's', who would likely be short?

Bonolo's two-year-old daughter has developmental delays due, in part, to a diet that included fish, bread, and dairy products. The most likely diagnosis for Bonolo's daughter is that she has

A typical fertilised egg contains a total of 22 pairs of chromosomes.

Dr Sithole has just been informed that his son has sickle-cell trait. As a knowledgeable doctor, Dr Sithole would realise that his son's body is most likely to experience

Which event occurs following in vitro fertilisation?

The ____ is the structure through which a mother and an embryo exchange waste and nutrients.

If a doctor informed you that your speech disorder was the result of problems on chromosomes 4, 7, and 15, you would rightly conclude that the disorder is always classifiable as

Moegsien is heterozygous for cheek dimples but is born with big dimples in both cheeks. Apparently, the allele for cheek dimples is

Which statement concerning the sickle-cell trait is true?

Genotype is to phenotype as

When looking through a microscope at an entire set of human male chromosomes, how would you be able to differentiate an autosome pair from a sex chromosome pair?

Which individual with a genetic predisposition toward being extroverted is demonstrating successful niche-picking?

As a geneticist, you found that a foetus has 47 chromosomes. What would be the most likely conclusion drawn from this information?

Zola is very concerned about the prebirth position of the child she is carrying. Which technique would be the best for determining whether Zola's concerns are warranted?

Human DNA is composed of a total of ____ different nucleotide bases.

While observing a special monitor, a doctor tells an expectant mother, 'As you can see, the legs and arms have just begun to emerge.' From this description, you should realise that the two are looking at a(n)