Genetics Chp 7

Front 1

Genes located on chromosomes that are found in the cells nucleus- in which the genotype of the mother directly determines the phenotype of her offspring

Back 1

Nuclear Genes

Front 2

What produces a gene product that accumulates in region of the egg that will eventually become anterior structures in the developing embryo?

Back 2

Bicoid

Front 3

A pattern in which a modification occurs to a nuclear gene or chromosome that alters gene expression, but is not permanent over the course of many generations

Back 3

Epigenetic Inheritance

Front 4

Refers to the phenomenon that the level of expression of many genes on the sex chromosome is similar in both sexes even though males and females have a different complement of sex chromosomes

Back 4

Dosage Compensation

Front 5

Female mammals equalize the expression of the X- linked genes by turning off one of their two X chromosomes

Back 5

Inactivation

Front 6

The mechanism of X inactivation is also known as?

Back 6

Lyon Hypothesis

Front 7

After several days each cell will grow and divide to produce a colony, this is also called?

Back 7

Clone of Cells

Front 8

A short region of the X chromosome that the genetic control of inactivation at the molecular level?

Back 8

X- inactivation Center (Xic)

Front 9

Affects the choice of the X chromosome to be inactivated?

Back 9

X Chromosomal Controlling Element (Xce)

Front 10

Refers to an analogous situation in which a segment of DNA is marked, and that mark is retained and recognized throughout the life of the organism inheriting the market DNA

Back 10

Genomic Imprinting

Front 11

Depending on how the genes are marked, the offspring expresses only one of the two alleles, this phenomenon is termed?

Back 11

Monoallelic Expression

Front 12

The attachment of methyl groups onto a cytosine base? Also a common way that eukaryotic genes maybe regulated.

Back 12

DNA methylation

Front 13

What does genomic imprinting involve that is located near the imprinting gene?

Back 13

Differentially Methylated Region (DMR)

Front 14

Because the organelles are found within the cytoplasm of the cells, the inheritance of organellar genetic material is called?

Back 14

Extranuclear Inheritance or Cytoplasmic Inheritance

Front 15

The genetic region of mitochondria and chloroplasts is located inside the organelle in a region known as?

Back 15

Nucleoid

Front 16

The pattern of inheritance observed by Correns is a type of extrachromosomal inheritance called?

Back 16

Maternal Inheritance

Front 17

A cell may contain both types of chloroplast, a condition known as?

Back 17

Heteroplasmy

Front 18

Boris Ephrussi and his colleagues identified mutations in Saccharomyces cerevisiae that had such a phenotype, these mutants were called?

Back 18

Petites

Front 19

When two types of gametes are made?

Back 19

heterogamous

Front 20

In species where maternal inheritance is generally observed, the paternal parent may occasionally provide mitochondria via the sperm, this phenomenon is called?

Back 20

Paternal Leakage

Front 21

Describes a symbiotic relationship in which the symbiont actually lives inside the host?

Back 21

Endosymbiosis

Front 22

Suggested that the ancient origin of chloroplasts was initiated when a cyanobacterium took up residence within primordial eukaryotic cell?

Back 22

Endosymbiosis Theory