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In chapter 12 of the AP Biology class, we got to cover chromosomes and genes in the human body. A chromosome contains hundreds to thousands of genes. Take up the quiz below on this chapter.
A human male has ____ chromosomes with ____ sex chromosomes.
47, XY
48, XX
46, XX
46, XY
Marfan's disease in humans, with its numerous effects, is an example of ___.
Epistasis
Pleiotropy
Incomplete dominance
Dominance modification
What is the hereditary cause of type AB blood?
The lack of pigment production
The presence of two different codominant alleles
An extra chromosome 21
The environment interacting with the genotype
A classical example of multiple alleles is ____.
Height in garden peas
Coat color in rabbits
Pink flowers in heterozygous snapdragons
Albinism in humans and animals
A small number of recombinants will occur due to crossing over between linked genes on homologous chromosomes.
True
False
True or false: in humans and some other animals, there is a chromosomal basis of sex determination.
True
False
The behavior of chromosomes during meiosis can account for Mendel's laws of segregation and independent assortment.
False
True
The y chromosome has genes for many characters unrelated to sex, whereas the X chromosome mainly encodes genes related to sex determination.
True
False
