1) Data:
dominant allele- A
recessive allele- a
Heterozygotic: Aa (only carries the allele)
Homozygotic recessive: aa (expresses the disease)
Homozygotic dominant: AA (doesn't carry or expresses the disease)
2)The first cross between Jim and his first wife originated a offspring with
<span>cystic fibrosis</span>. That offspring has the genotype aa and for that to happen both parents need to be a least carriers or express the disease. The exercise rules out the second case, which makes Jim a carrier.
3)Now between Jim and Martha:
From the previous step, we already found that jim is a carrier and the exercise also tells us that Martha is one too. So, their genotype is: Aa.
The cross: Aa x Aa
The probability:
1/4 aa = 25%
2/4 =Aa
1/4 - AA
the probability of having a <span>baby with cystic fibrosis is 25%</span>
If a pathogen penetrates the first line of defense, the nonspecific internal defenses (as part of the second line of defense) it will possibly encounter are: an inflammatory response and neutrophils.
If a pathogen able to somehow pass through the the barriers shielding the body, one of the first active responses of the innate immune system is triggered. It is termed as an inflammatory response.
The major role of an inflammatory response is to set up a physical barrier against the spread of an infection.
Neutrophils are the phagocytic cells which move throughout the body in the blood. They are generally the first immune cells to show up at the site of an infection.
To learn more about neutrophils here
brainly.com/question/27960149
#SPJ4
Explanation:
in a synapse, neurotransmitters are stored in vesicles located in the axon terminal of the presynaptic neuron
