In a group of tomato plants, some individuals have red fruit and others have yellow fruit. In this group, the gene for the fruit color trait has two alleles. The allele for yellow fruit (f) is recessive to the allele for red fruit (F). One tomato plant has (FF) and the other has (ff). What is the probability that a tomato plant produced by this cross will be homozygous dominant for the fruit color gene? *

a) 0 Percent
b) 25 Percent
c) 50 percent
d) 75 percent
e) 100 Percent

25 %

Explanation:

Genetically, homozygous dominant stands for FF and for the probability of an offspring to have this genetic constitution we make the cross of the genotypes FF and ff. From random fertilisation, the following genotypes would be clearly observed , FF, Ff, Ff and ff, making a probability of FF 1/4 which is equivalent to 25%.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.