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AP Biology: Essential Life Process Information Drill 1, Problem 1. If one parent is heterozygous for the sickle cell trait while the other par...
AP Biology 1.2 Essential Life Process Information. What is likely the genotype of the parents of this family?
AP Biology 1.4 Essential Life Process Information. A 1:2:1 phenotypic ratio is the hallmark of what type of cross?
AP Biology 1.2 Essential Life Process Information 36 Views
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AP Biology 1.2 Essential Life Process Information. What is likely the genotype of the parents of this family?
Transcript
- 00:00
Thank you We sneak and here's your shmoop du jour
- 00:05
brought to you by dominant genetic traits The bullies of
- 00:09
dna high school a three to one few notification E
- 00:14
o is seen in a large family when looking at
- 00:16
the inheritance of a widow's peak or a dominant trait
Full Transcript
- 00:20
called w what is the likely gino type of the
- 00:24
parents of this family on here The pension Well gina
- 00:32
type determines fino type right That means the combination of
- 00:35
dominant and recessive genes determines how an organism looks well
- 00:38
Let's go through each possible genotype of mom and dad
- 00:41
to find out which one gives junior or junior et
- 00:43
a seventy five percent chance of having a widow's peak
- 00:46
This thing first up option a big big dubbed by
- 00:52
big big depth well that's both parents having two dominant
- 00:55
genes for this trait Well as you can see this
- 00:58
would lead to all big w's and afford a zero
- 01:01
fino typical ratio I one hundred percent of their kids
- 01:04
will have widow's peaks Unless of course they take matters
- 01:07
into their own hands Okay next up answer Be big
- 01:10
Big dubbed by little that little dub one parent has
- 01:13
two dominant genes The other has to recess it well
- 01:16
Different results on the last one but still a four
- 01:18
to zero fina typical ratio If there's even one big
- 01:22
w present in the fina type that means you're in
- 01:24
the widow's peak club Very exclusive All right let's try
- 01:28
See Big dead little dubbed by little little Nope This
- 01:32
gives their offspring a fifty fifty chance kind Of like
- 01:35
flipping a genetic coin yes okay last won The correct
- 01:39
answer is d big dud little dubbed by big doubled
- 01:41
up ah three to one ratio is the hallmark of
- 01:44
a mano hybrid One dominant one recess If cross if
- 01:48
both of your parents have a widow's peak and share
- 01:51
this type of genome there's a seventy five percent chance
- 01:54
or three to one that you or your brothers or
- 01:57
sisters have won so d it is want to learn
- 02:01
way more about widow's peaks Well good for you to
- 02:03
do a google search for widow's peak It's that simple
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