Chapter 29 Heredity

True or False: gametes contain the diploid number of chromosomes (46)

This is the term for pairs of chromosomes that look similar and carry genes for the same traits, but do not necessarily bring about the expression of those traits

Sex of the child is determined by:

This is the diploid chromosomal complement displayed in homologous pairs

This is the genetic makeup (DNA) represents the maternal and paternal genetic instructions

Matched genes on the same locus on homologous chromosomes are said to be:

True or False: Alleles always code for the same forms of a given trait

When two alleles controlling a trait are the same, a person is said to be:

When two alleles controlling a trait are different, a person is said to be:

When one allele masks or suppresses the expression of its partner allele, that allele is said to be:

The way that a genotype is expressed in the body is referred to as that person's___ on the other hand, a person's genetic makeup is his ____

All of the following effect variability in genotype and phenotype except:

The two important points about metaphase of meiosis I are:

In a man's testes, the number of gamete types that can be produced based on independent assortment is:

The result of chromosomes that can break and precisely exchange gene segments with their homologous chromosomes is called:

This is a diagram used to predict the probability of having a certain type of offspring with a particular genotype and phenotype

All of the following are true about Huntington's disease except:

Achondroplasia is:

True or False: most if not many genetic disorders are inherited as dominant disorders

All of the following are recessive conditions except:

This is a disorder of the brain lipid metabolism, caused by an enzyme deficit

If you are a carrier for a gene you:

True or False: the two major avenues used to identify carriers are pedigrees and genomic impriting

All are true of incomplete dominance except:

One gene that affects multiple traits is said to be

A gene at one locus alters the phenotypic expression of a gene at a second locus is said to

An example of epistasis is:

True or False: the Y chromosome carries only about 78 genes

The X chromosome bears over ____ genes:

All of the following are true regarding X-linked genes except:

True or False: phenocopies are caused by mutations

Mutations of imprinted genes may lead to pathology; victims of Prader-Willi syndrome get their defective chromosome from their ____. People with the syndrome are mildly to moderately retarded, short and grossly obese.

All mitochondrial genes are transmitted by the ___

What disorders are associated with mutations in the mitochondrial DNA? Pick the incorrect disorder

Phenylketonuria is caused by

Trisomy 21 results in:

Trisomy 8 results in:

Trisomy 18 results in:

Trisomy 13 results in:

True or False: someone who is XXY may have little to no effects while others develop some female characteristics

This syndrome causes the person to have short webbed neck, low-set ears, short stature, no breasts, infertile

Which fetal testing involves taking a sample and doing a karyotype to check for genetic abnormalities?

True or False: in genetic engineering a virus can be used to infect the cells with a functional gene

Carcinogens and Teratogens are mutagens, but Teratogens cause cancer while carcinogens cause mutations that can be passed on.