A-2: Behavioral Genetics: (Appendix pages, lecture) 1. Describe heterozygous and
ID: 257530 • Letter: A
Question
A-2: Behavioral Genetics: (Appendix pages, lecture) 1. Describe heterozygous and homozygous genes and provide an example. 2. Describe genotype and phenotype and provide an example 3. Describe dominant and recessive genes 4. Briefly describe how Mendel's experiments demonstrated dominant/recession, heterozygous genes, and genotype/phenotype 5. What is a gene? 6. When would the effects of a recessive gene be expressed? 7. What is the relationship of the nucleus, chromosome, DNA, 8. How many chromosomes are in each human cell? How many 9, Describe why siblings share only 50% (not 100%) of the same 10. Why are X-linked diseases, such as colorblindness and 11. What is RNA? How does messenger RNA help in 12. What is a structural gene? What is a regulatory/operator gene? 13. Explain how a clone would be the same as the donor animal? genes, and nucleotides/bases? chromosomes are in an egg or sperm? genes hemophilia, more common in males? manufacturing a protein? What is a codon? What is gene expression? Different from the donor animal?.Explanation / Answer
Answer 1. In general there will be two copies of allele for a single gene who will be responsible for a single trait (character/phenotype).In case of heterozygous gene there will be two different alleles for a single gene. For example pink color flower have gamete Rr (Red flower RR x White flower rr).
In case of homozygous there will be same allele for a single gene. It will always express its character whether it is dominant or recessive. For example red color of flower having gametes are RR or white color flower having gamete are rr.
Answer 2. Genotype represents the genetic content of and individual for example for red color in plant there are RR gametes. So here RR is the genotype. Phenotype is the character which will be a part of final appearance or morphological character. In case of flower color the Red is the phenotype.
Answer 3. Dominant genes define as the successful inheritance of phenotypic character from parents to into next generation/offspring. Dominant gene will express its phenotypic character even in case heterozygous stage.
Recessive gene are opposite of the dominant. These gene are unable express their feature in presence of dominant gene. They will express only in case of homozygous situation.
Answer 4. In case of mendel’s law he demonstrated the dominant and recessive using the pea plant experiment he geve the “Law of dominance” in which he explained that the recessive will express in homozygous situation and dominant will express in both situations i.e. heterozygous and homozygous . He explained the dominant and recessive genes in term of phenotypic behavior where he observed the seed shape i.e. wrinkled or round.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.