Non Mendelian Genetics
Presentation
•
Science
•
12th Grade
•
Medium
Brandon Weiner
Used 1+ times
FREE Resource
4 Slides • 18 Questions
1
Non-Mendelian Genetics:
Incomplete Dominance
Codominance
Polygenic Traits
Epistasis
2
Make this chart in your notebook! As you watch the video on the next slide, fill it out!
3
Open Ended
How tall are you? What plays a role in your height?
4
Watch the video below and complete your chart!
5
Make sure your chart is complete!
Use it to help you answer the questions on the rest of this Quizizz.
It's also a good idea to take notes on anything you didn't include in your chart!
6
Multiple Choice
Why do they call non-mendelian genetics patterns "rule breakers"?
They use RNA not DNA
Having a dominant allele doesn't necessarily mean that trait will show
There are no dominant alleles, only recessive ones in these patterns
They defy the laws of nature.
7
Multiple Choice
What happens in incomplete dominance?
the dominant allele isn't completely expressed when the recessive one is present.
both alleles are considered dominants, so both traits show up.
more than one gene works together to determine a trait
1 gene depends on another to be expressed.
8
Dropdown
9
Multiple Choice
An example of incomplete dominance is ...
Heterozygote snapdragons are pink, not red or white
Heterozygote chickens are black AND white, not just one or the other
The three alleles that affect height
The gene that controls whether llama wool color will be expressed
10
Multiple Choice
In snap dragons, Red (R) flowers is incompletly dominant to white (r) flowers. Heterozygotes are pink. If a pink plant is crossed with a pink plant, what percent of the offspring will be red?
0%
25%
50%
75%
100%
11
Multiple Choice
In snap dragons, Red (R) flowers is incompletly dominant to white (r) flowers. Heterozygotes are pink. If a red plant is crossed with a pink plant, what will the phenotypes of the offspring be?
75% red, 25% white
100% red, 0% pink
25% red, 50% pink, 25% white
50% red, 50% pink
12
Multiple Choice
What happens in codominance?
the dominant allele isn't completely expressed when the recessive one is present.
both alleles are considered dominants, so both traits show up.
more than one gene works together to determine a trait
1 gene depends on another to be expressed.
13
Multiple Choice
An example of codominance is ...
Heterozygote snapdragons are pink, not red or white
Heterozygote chickens are black AND white, not just one or the other
The three alleles that affect height
The gene that controls whether llama wool color will be expressed
14
Multiple Choice
In chickens, Black Feathers (B) and White Feathers (W) are codominant. If a black chicken and a white chicken are bred, what percent of the offspring will be black AND white?
0%
25%
50%
75%
100%
15
Multiple Choice
In chickens, Black Feathers (B) and White Feathers (W) are codominant. If a heterozygous chicken and a white chicken are bred, what percent of the offspring will be black AND white?
0%
25%
50%
75%
100%
16
Multiple Choice
What happens with polygenic traits?
the dominant allele isn't completely expressed when the recessive one is present.
both alleles are considered dominants, so both traits show up.
more than one gene works together to determine a trait
1 gene depends on another to be expressed.
17
Multiple Choice
An example of a polygenic trait is ...
Heterozygote snapdragons are pink, not red or white
Heterozygote chickens are black AND white, not just one or the other
The three alleles that affect height
The gene that controls whether llama wool color will be expressed
18
Multiple Choice
What else can impact polygenic traits like height and skin color?
environmental factors
having a pet
living in Minnesota
how many books you read
19
Multiple Choice
What happens in cases of epistasis?
the dominant allele isn't completely expressed when the recessive one is present.
both alleles are considered dominants, so both traits show up.
more than one gene works together to determine a trait
1 gene depends on another to be expressed.
20
Multiple Choice
An example of a epistasis is ...
Heterozygote snapdragons are pink, not red or white
Heterozygote chickens are black AND white, not just one or the other
The three alleles that affect height
The gene that controls whether llama wool color will be expressed
21
Match
Remember that in llamas, Black Wool (B) was dominant to Brown Wool (b). Also, Expressing Wool Color (C) is dominant to Not expressing Wool Color (c). Match each llama's genotype with their phenotype.
BbCc
bbCC
Bbcc
black wool
brown wool
white wool
black wool
brown wool
white wool
22
Multiple Choice
Why do you need larger punnett squares when making predictions about polygenic traits and cases of epistasis?
to show more than one gene is involved
to show which genes are more important than others
to show how some genes aren't carried on chromosomes
to show how Mendel was wrong
Non-Mendelian Genetics:
Incomplete Dominance
Codominance
Polygenic Traits
Epistasis
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