ch 15 Mendelian inheritance

Question 1

How does inheritance work?

Answer 1

Each parent contributes equally, causing more variation over time

Question 2

Blending inheritance works how?

Answer 2

Think black and white bunnies who have grey offspring who mate with white offspring and eventually turn white again. This decrease variation and is a wrong process.

Question 3

What are true breeding traits?

Answer 3

Homozygous traits that are observed and present for many generations.

Question 4

Dominant alleles

Answer 4

The capital letter, but more important the trait that takes concern over the other and shows

Question 5

Recessive alleles

Answer 5

The lowercase letter that If combined with a dominant will not show

Question 6

Heterozygous

Answer 6

Have dominant and recessive (Aa)

Question 7

Homozygous

Answer 7

Two recessive alleles or two dominant alleles (AA) or (aa)

Question 8

Is it possible to have same phenotype but different genotype?

Answer 8

Yes

Question 9

Is it possible to have same genotype but different phenotype?

Answer 9

Yes

Question 10

What is a gene?

Answer 10

a sequence in a DNA molecule that is on a specific site on a chromosome

Question 11

What are test crosses?

Answer 11

The pea plant crosses Mendel used to if an individual was homozygous or heterozygous for a trait by crossing it with a homozygous recessive.

Question 12

What are the genotypes in independent assortment?

Answer 12

AB,ab,Ab,aB

Question 13

What are the genotypes if linked?

Answer 13

only AB or ab

Question 14

How to find probability of events happening TOGETHER?

Answer 14

multiply probabilities of individual events

Question 15

How to find the probability of events happening in two different ways?

Answer 15

add the individual probabilities

Question 16

What is Epistasis?

Answer 16

The phenotypic expression of one gene is influenced by another gene.
For example the color of chickens is dominant but if they have a certain gene it basically overshadows the others Cccc like have the two recessive cc

Question 17

Pedigree

Answer 17

have male and female crosses while showing if the parent or offspring show a trait. they show reported ancestory

Question 18

What happens in a pedigree if the trait is dominant?

Answer 18

It appears in every generation

Question 19

What happens in a pedigree if the trait is recessive?

Answer 19

It will often skip generations, not always affect parents or every generation, and is mostly common in family mating

Question 20

Incomplete dominance

Answer 20

inherit both like being heterozygous for a trait

Question 21

What is codominance?

Answer 21

Two alleles that produce phenotypes that are both present like AB blood type

Question 22

What is penetrance?

Answer 22

proportion of individuals with a certain genotype that show the expected phenotype.

Question 23

What is Variable Expressivity?

Answer 23

The degree to which the genotype can be expressed in an individual.