The Chalk Line
2022
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Sep 28, 2020 · Inheritance - YouTube. Revision Monkey. 22K subscribers. Subscribed. Like. 20K views 3 years ago Key Stage 3 Science. This video is about inheritance and is for Key Stage Three pupils (pupils...
- 6 min
- 20.8K
- Revision Monkey
Genetics is a fascinating world, focusing on the inheritance of traits from parents to offspring. Gregor Mendel, the father of classical genetics, made significant contributions to our understanding of this process. Dominant and recessive traits play a crucial role in determining an individual's characteristics.
- 17 min
- Sal Khan
- Why is the darker eye color usually dominant?A new hypothesis is that all Homo Sapiens originally had Dark Eyes (Brown) and that one individual about 6,000 to 10,000 years ago had a mutation w...
- is it possible that one day people will all have the same eye color and skin colorIf everyone has the dominant allele for eye and skin color by some chance, then yes I think it is POSSIBLE (trying to stress it), but highly improb...
- What eye colors are the most dominant in descending order?You must remember that dominance of an allele and how common that allele is in the population (its frequency) are not the same thing. Most of the a...
- This may be a silly question, but are the 46 chromosones in one cell different to the 46 in another ...All of your cells have the same chromosomes, in which 23 came from your father and 23 from your mother. Just remember, only human diploid cells hav...
- Why is it that darker colors are dominant over lighter colors? Is the probability actually correct, ...If Brown is dominant and Blue is recessive: B=brown and b=blue, the chances of brown are dependent on the parental traits. If the parents had Bb an...
- At 15:09 does the order in which you write the heterozygous trait matter? Like does the dominant all...It doesn't matter in a Punnett square, you can put whichever genotype you prefer first. Personally, I prefer to put the dominant allele on the top....
- How are there so many eye colors if we all came from 2 people. If the two people had different color...You pose a good question: how could all of this variation derive from just two people? We have people with red hair and black hair, brown, and blon...
- can a hetrozygote have more than 2 alleles for eye or skin color?Note: My original answer was a bit sloppy — this is an edited version. First, many genes may influence a single phenotype. Eye color is an excellen...
- how does dna go in to a baby when bornSo DNA goes into a baby by way of meiosis, which is where cells divide to reduce their chromosomal number to the haploid state, creating gametes, w...
- why are some eye colars rarer than othersBecause the gene that controls eye color has colors that are more common in the population than rarer colors.
Let's explore the kinds of inheritance patterns seen in Mendelian Genetics! Uncover the secrets of alleles, and explore the difference between homozygous and heterozygous traits. Learn about dominant and recessive traits, and how they influence genotypes and phenotypes. Finally, discover how a Punnett Square can predict gene inheritance.
- 5 min
- Ross Firestone
- Why are the practice problems always at the beginning of the section?That's because Khan Academy wants to see if you understand some things already and to help you get the idea of what the subject is.
- As far as I know, the 'AA' type and the 'AO' type is the same blood type: A. Are these two types (AA...Since the A allele is dominant, both AA and AO are considered the A blood type. The categorization of the blood types refers to the antigens (or sm...
- Why is the A allele dominant and the O allele recessive? Is it because of the order that they are li...It's easier to look at it as both antigen A and antigen B are dominant and O is neither. B can't cancel out A and A can't cancel out B, so you can...
- At 2:32, why is A(the dominant blood type) put next to O(the recessive)?When we refer to the different blood types (ie. AB, A, B, or O), we are classifying them according to the presence of a series of sugar molecules o...
- How can humans have > 2 alleles per gene?An individual can only have two alleles at most for a given gene. Multiple alleles (as in the case of A/B/O for blood type) are a phenomena for a p...
- Can both of the parents give their offspring the same allele? @0.54Yes! An allele, as discussed in the video, is a form of a gene. We typically think of human genes as having two alleles: one from the father and on...
- What if both the parents have blood type AB?If both parents had blood type AB, that would mean that the offspring would have: 25% chance of having the genotype AA (phenotype would be blood ty...
May 22, 2020 · With Lily Collins, Simon Pegg, Connie Nielsen, Chace Crawford. The patriarch of a wealthy and powerful family suddenly passes away, leaving his daughter with a shocking secret inheritance that threatens to unravel and destroy the family.
