Homework Answers
Answer-
20-a) Ths is an example of complementary gene interaction, a type of non-allelic gene interaction in which two gene pairs which are present on separate loci but influence the same trait, but either of them if present alone does not produce the phenotypic trait. Two genes, A and B are involved in this inheritance pattern. Tall phenotype is only produced if both dominant genes are present, i.e. genotype is A_B_. If any dominant gene is absent , this will result in dwarf phenotype. Genotype of dwarf plant is A_bb, aaB_, aabb.
Picture is given below.
20-b) In true breeding strains, both alleles will be same for a gene. That means these strains will have alleles in homozygous condition. When plants with genotype AaBb is self fertilized, then geotypes with AABB, AAbb, aaBB, aabb will be true breeding strains. Proportion of true breeding strains will be 4/16 = 0.25 or 25%.
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Match the following terms with the appropriate description
below:
a. alleles b. autosomes c. dominant allele d. genotype e.
heterozygous f. homozygote g. phenotype h. recessive allele i. sex
chromosomes
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2. ________________ how genetic make-up is expressed
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Match the following terms with the appropriate description
below:
a. alleles b. autosomes c. dominant allele d. genotype e.
heterozygous f. homozygote g. phenotype h. recessive allele i. sex
chromosomes
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2. ________________ how genetic make-up is expressed
3. ________________ chromosomes that dictate most body
characteristics
4. ________________ alternative forms of the same gene
5. ___________an individual bearing two alleles that are the same
for a particular trait 6. ________________ an allele that is
expressed, whether in...
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