BB Lec - Basic Concepts in Genetics

Question 1

– basic unit of genetic information, determine the inherited characters.

Answer 1

Gene

Question 2

– the collection of genetic information.

Answer 2

Genome

Question 3

– storage units of genes.

Answer 3

Chromosomes

Question 4

is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life

Answer 4

DNA

Question 5

a segment of DNA that codes for a polypeptide, blueprint of life

Answer 5

gene:

Question 6

are dense bodies found in the nucleus of cells. They contain all the genetic information necessary to create a living being

Answer 6

Chromosomes

Question 7

– location of a gene/marker on the chromosome.

Answer 7

Locus

Question 8

– one variant form of a gene/marker at a particular locus.

Answer 8

Allele

Question 9

the site on a chromosome where a particular gene is located

Answer 9

LOCUS

Question 10

There are two major types of chromosomal damage:

Answer 10

Numerical abnormalities

Structural abnormalities

Question 11

occur when cells lack the usual 46 pairs of chromosomes.

Answer 11

Numerical abnormalities

Question 12

occur when cells have the usual 46 pairs of chromosomes, but the normal structure of the chromosomes has been altered.

Answer 12

Structural abnormalities

Question 13

Sometimes a chromosome will break into two pieces. This is called a

Answer 13

chromosome “break.”

Question 14

Sometimes one of the pieces is lost. This is called a Either the long or the small arm of a chromosome can be …

Answer 14

“deletion.”

Question 15

Sometimes two chromosomes will break in half and the four pieces will reassemble with each other improperly. This is called a

Answer 15

chromosome “translocation”

Question 16

The expression of a genotype is termed a

Answer 16

phenotype

Question 17

A __ is expressed even if it is paired with a recessive allele.

Answer 17

dominant allele

Question 18

A __ is only visible when paired with another recessive allele.

Answer 18

recessive allele

Question 19

started the first classification system of living things in the 17th century and used the unit of “species” as its principal definition.

Answer 19

Carolus Linnaeus

Question 20

published his epic book On the Origin of Species after many years of intense study of various and diverse life-forms.

Answer 20

Charles Darwin

Question 21

Charles Darwin title of book

Answer 21

On the Origin of Species

Question 21

First gen in the study

Answer 21

Parenteral
Pure
P1 generation

Question 22

Second gen

Answer 22

First filial

F1

Question 23

What was the trait observed in the 2nd gen

Answer 23

Dominant trait

Question 24

Products of F2 gen

Answer 24

3:1

Question 25

Mendel’s law
Shows that alleles of genes have no permanent effect on one another whenpresent in the same plant but segregate segregate unchanged by passing into different gametes

Answer 25

1st law

Law of Independent Segregation

Question 26

Which Mendelian Law

Gene is passed on to the next generation on its own

Answer 26

Law of Independent segregation

Question 27

Manner by which blood groups are inherited

Answer 27

Codominant manner

Question 28

In —, both genes expressed and products seen at phenotypic level
One gene not dominant over its allele

Answer 28

Codominance

Question 29

Blood grp system showing codominanxe

Answer 29

MNSs