BB Lec - Basic Concepts in Genetics Flashcards Preview

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Flashcards in BB Lec - Basic Concepts in Genetics Deck (30):
1

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



Gene

2

– the collection of genetic information.

Genome

3

– storage units of genes.

Chromosomes

4

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

DNA

5

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



gene:

6

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

Chromosomes

7

– location of a gene/marker on the chromosome.

Locus

8

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

Allele

9

the site on a chromosome where a particular gene is located

LOCUS

10

There are two major types of chromosomal damage:

Numerical abnormalities
Structural abnormalities

11

occur when cells lack the usual 46 pairs of chromosomes.

Numerical abnormalities

12

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

Structural abnormalities

13

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

chromosome “break.”

14

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

“deletion.”

15

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

chromosome “translocation"

16

The expression of a genotype is termed a

phenotype

17

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

dominant allele

18

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

recessive allele

19

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

Carolus Linnaeus

20

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

Charles Darwin

21

First gen in the study

Parenteral
Pure
P1 generation

22

Second gen

First filial
F1

23

What was the trait observed in the 2nd gen

Dominant trait

24

Products of F2 gen

3:1

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

1st law
Law of Independent Segregation

26

Which Mendelian Law
Gene is passed on to the next generation on its own

Law of Independent segregation

27

Manner by which blood groups are inherited

Codominant manner

28

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

Codominance

29

Blood grp system showing codominanxe

MNSs

30

Charles Darwin title of book

On the Origin of Species

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