They are plants without a vascular system
Answer:
c. Affected fathers have all affected daughters, but no affected sons.
Explanation:
Given that the disease is caused by a dominant allele on X chromosome, an affected father would have a disease allele in the X chromosome that passes along to the male gamete, while the gametes containing a Y chromosome would not have it (since it is X-linked).
During sexual reproduction, the father passes an X chromosome to its daughters (the second X chromosome being contributed by the mother) but an Y chromosome to its sons (the single X chromosome being contributed by the mother).
Indeed, within an affected father's offspring, all his daughters will receive the affected X chromosome from him, while his sons will receive an unaffected Y chromosome (since the disease is X-linked). These males will not inherit the disease, for they will receive an unaffected X chromosome from her mother (which is expected to be healthy since the disease is rare).
Answer:
NASA knows of no asteroid or comet currently on a collision course with Earth, so the probability of a major collision is quite small. In fact, as best as we can tell, no large object is likely to strike the Earth any time in the next several hundred years. and I am not telling you what school I go to I do not know you.
Explanation:
Vestigal structures is the answer!!
Answer: A) By increasing the need for genetic engineering of fish
Fish is a globally accepted source of food, with the increase in population all over the world the demand for fish as a source of food is also increasing. Genetic engineering is a field of biotechnology in which the genome of the organism is manipulated by addition, deletion or substitution. This is done to improve the productivity of the animals and plant crops and to obtain desires characteristics in them.
A) By increasing the need for genetic engineering of fish is the correct option which can directly improve fish agriculture because a fish species can be genetically modified so that it can be able to produce more number of offsprings and nutritious quality of flesh, useful for human consumption.
