My favorite color is blue 143
Answer:
Science and biology i think
Explanation:
ultra violate radition
UV is an environmental human carcinogen. It’s the most prominent and universal cancer-causing agent in our environment. There is very strong evidence that each of the three main types of skin cancer (basal cell carcinoma, squamous cell carcinoma and melanoma) is caused by sun exposure. Research shows that as many as 90% of skin cancers are due to UV radiation.
Complete question:
In man, two abnormal conditions, cataracts (C) in the eyes and excessive fragility (F) in the bones, seem to depend on separate dominant genes located on different chromosomes. Normal vision and normal bones are recessive traits. A man with cataracts and normal bones, whose father had normal eyes, married a woman free from cataracts but with fragile bones. Her father had normal bones.
1. What is the genotype of the man with cataracts and normal bones?
2. What is the genotype of the woman with normal vision and fragile bones?
3. What type of offspring might this couple expect?
Answer:
- Cc ff
- cc Ff
- F1) 4/16 = 1/2 = 25% CcFf, cataracts and fragile bones
4/16 = 1/2 = 25% Ccff, cataracts and normal bones
4/16 = 1/2 = 25% ccFf, normal eyes and fragile bones
4/16 = 1/2 = 25% ccff normal eyes, normal bones
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Answer:
The F1 progeny is completely heterozygous for the <em>loci</em> of interest since they were obtained by mating between two pure-breeding plant lines. In the next generation, the backcross progeny will have homo-zygous individuals and therefore they will be more variable, resulting from meiosis in F1 hybrids
Explanation:
An F1 resulting from the cross between two pure-breeding plant lines will produce all hybrid individuals, all of them genetically (and phenotypically) identical. Meiosis in F1 hybrids is well known to produce homo-zygous genotypes and thus increases genetic diversity in progeny. For instance, for a single <em>locus</em>, the expected ratio of genotypes obtained from crossing two heterozygous parents is 1:2:1, i.e., one homo-zigous dominant individual, two heterozygous individuals (genetically identical to the parents) and one homo-zygous recessive individual; while the expected phenotypic ratio is 3:1 (i.e., 3 dominant expressing: 1 recessive expressing).
