The gene for fangs is recessive, yet most of the dragons have fangs. How can this happen? [Hint. The gene that causes dwarfism (achondroplasia) in humans is dominant
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The gene for fangs is recessive, yet most of the dragons have fangs. How can this happen? [Hint. The gene that causes dwarfism (achondroplasia) in humans is dominant
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- In humans, color blindness is a sex-linked recessive trait. A female who is a carrier (XBXb) for color blindness has children with a male with normal vision (XBY). Make a Punnett Square to help you answer the questions. What are the chances of their children being color blind? What are the chances of their children being ‘carriers’ for color blindness?Tay-Sachs disease is an autosomal recessive disease. Affected individuals do not survive to reproductive age. Why has Tay-Sachs persisted in humans?To determine whether radiation associated with the atomic bombings of Hiroshima and Nagasaki produced recessive germ-line mutations, scientists examined the sex ratio of the children of the survivors of the blasts. Can you explain why an increase in germ-line mutations might be expected to alter the sex ratio?
- There are six types of agglutinogen named C,D, E and c,d,e.the first three are dominant and last three are recessive.discussGenotypes and Phenotypes I have gap teeth, but my husband doesn't. How do I explain how my children got gap teeth just like me, using Genotypes and PhenotypesMaple syrup urine disease is an autosomal recessive gene. The R allele leads to a normal protein product, whereas r leads to a mutant protein. Which genotype below will display the Maple syrup urine disease phenotype? A. Rr B. RR C. rr D. Rr and rr
- Two brown bears have cubs in late spring. The mother bear has the phenotype for long front claws. The mother bear has the genotype (Aa), while the father has the same genotype as the mother. A) What percentage of the offspring will have long claws?Tay-Sachs disease is an autosomal recessive disease. Affected individuals do not often survive to reproductive age. Why has Tay-Sachs persisted in humans?The trait of having short eyelashes is recessive in humans. A male with short eyelashes has two children with a female. One child has short eyelashes and the other has the long eyelash phenotype. What are the genotypes of the two parents?
- Skin colour in humans is determined by more than one gene pair, whereas Rh factor in blood is controlled by one gene pair. Which would show more variability in the human population? Why?Can someone explain to me why lethal alleles are named "recessive" alleles? My understanding is that if MmXMm then I will get a 2:1 because MM is lethal while Mm causes manx in cats, and mm is non-lethal.Identical twins each carry the same genome, but over time, can develop different phenotypes. How can you explain this?
