Non-Mendelian Genetics

Question 1

Many genes come together
and mix

Answer 1

Non-Mendelian Inheritance

Question 2

Genes from both parents can mix or show up in organisms, causing the inheritance to become uncertain or hard to predict.

Answer 2

Non-Mendelian Inheritance

Question 3

One gene dominates the other

Answer 3

Mendelian Inheritance

Question 4

Dominant allele appear
on the organisms while
the recessive allele will
not appear

Answer 4

Mendelian Inheritance

Question 5

A term that describes the joint role of multiple genes in determining phenotypic variability.

Answer 5

Gene Interactions

Question 6

This occurs when one gene control one trait, such as in various forms of dominance relationship.

Answer 6

Allelic Interactions

Question 7

ALLELIC INTERACTIONS

Answer 7

A. Complete dominance
B. Incomplete dominance
C. No dominance

Question 8

A condition wherein the allele regarded as dominant completely masks the effect of the allele that is recessive.

Answer 8

COMPLETE DOMINANCE

Question 9

In complete dominance, what is the phenotypic ratio of F2 generation?

Answer 9

3:1

Question 10

The dominant character expresses itself but not completely.

Answer 10

INCOMPLETE DOMINANCE

Question 11

In this case, dominance is absent and the progeny does not resemble any of its parents.

Answer 11

INCOMPLETE DOMINANCE

Question 12

In incomplete dominance, heterozygotes are _____ ____ between the two homozygous types of the parents.

Answer 12

phenotypically intermediate

Question 13

In incomplete dominance, what is the phenotypic ratio of F2 generation?

Answer 13

1:2:1

Question 14

What is the spp. that displays incomplete dominance?

Answer 14

4 o’clock plant Mirabilis jalapa

Question 15

No particular gene is dominant, such as: Lethal Genes and Codominance

Answer 15

NO DOMINANCE

Question 16

Both the dominant alleles are equally strong & thus expressed in the offspring simultaneously.

Answer 16

Codominance

Question 17

Heterozygotes exhibit a mixture of the phenotypic characters of both homozygotes instead of a single intermediate expression.

Answer 17

Codominance

Question 18

These are genes that can cause the death of an organism.

Answer 18

Lethal Genes

Question 19

Lethal Genes

Answer 19

→ Dominant lethals
→ Recessive lethals

Question 20

These are the alleles whose presence is
required in one copy in an entity for them to turn fatal.

Answer 20

Dominant lethals

Question 21

Example for Dominant lethals

Answer 21

Huntington’s disease

Question 22

Those that are lethal when in homozygous
recessive condition and effects of recessive genes are sufficiently drastic to kill the bearers of certain genotypes.

Answer 22

Reccesive lethals

Question 23

A process of how a seed receives genetic information from its parent trees.

Answer 23

Inheritance

Question 24

Why did Mendel choose pea plant in his experiment in 1857?

Answer 24

-Easy to grow and req. little space.
-Inexpensive
-Self-fertilized
-Cross-pollinated

Question 25

Traits studied by Mendel.

Answer 25

Seed Shape Seed color Flower color Pod shape Pod color

Question 26

Refers to the first individuals that are crossed in a breeding experiment.

Answer 26

Parental Generation

Question 27

A cross that involves one pair of contrasting traits.

Answer 27

Monohybrid cross

Question 28

This cross produces the First Filial Generation.

Answer 28

Monohybrid Cross

Question 29

The offsrings of the two cross-pollinated P generation.

Answer 29

First Filial Generation

Question 30

In the third experiment, mendel allowed the F1 generation to ___ ____. These produces the ____ _______.

Answer 30

Self-pollinate, F2 generation.

Question 31

A diagram that predicts the outcome of a genetic cross by considering all possible combinations of gametes in the cross

Answer 31

Punnett Square

Question 32

Who invented Punnett square?

Answer 32

Reginald C. Punnett

Question 33

different forms of genes for a single trait

Answer 33

Alleles

Question 34

gene that is expressed only in the homozygous state

Answer 34

Recessive

Question 35

MENDEL’S POSTULATES & LAWS OF INHERITANCE

Answer 35

1. Principle of Paired Factors 2. Principle of Dominance 3. Law of Segregation 4. Law of Independent Assortment

Question 36

It says that, genetic characters are controlled by unit factors that exist in pairs in individual organisms.

Answer 36

PRINCIPLE OF PAIRED FACTORS

Question 37

When two different alleles occur together, one of them may be completely expressed, while the other may have no observable effect on the organism’s appearance.

Answer 37

PRINCIPLE OF DOMINANCE

Question 38

“During the formation of gamete, each gene separates from each other so that each gamete carries only one allele for each gene.”

Answer 38

LAW OF SEGRATION

Question 39

It states that genes do not influence each other with regard to the sorting of alleles into gametes: every possible combination of alleles for every gene is equally likely to occur.

Answer 39

LAW OF INDEPENDENT ASSORTMENT

Question 40

* The independent assortment of genes can be illustrated by the ____ ____/

Answer 40

dihybrid cross

Question 41

a cross between two individuals with two observed traits

Answer 41

dihybrid cross

Question 42

It is a flower with all of the floral whorls present (calyx, corolla, stamens, and pistil)

Answer 42

Complete

Question 43

It is the removal of immature male structure to prevent self-pollination or unwanted cross pollination

Answer 43

Emasculation

Question 44

Where the same trait is expressed generation after generation

Answer 44

True Breeding

Question 45

Typical phenotypic ratio for a Mendelian dihybrid cross is ____________

Answer 45

9:3:3:1