Answer:
See the answer below
Explanation:
Let the disorder be represented by the allele a.
Since the disease is an autosomal recessive one, affected individuals will have the genotype aa and normal individuals will have the genotype Aa or AA.
Since the four adults are carriers, their genotypes would be Aa.
Aa x Aa
Progeny: AA 2Aa aa
Probability of being affected = 1/4
Probability of being a carrier = 1/2
Probability of not being affected = 3/4
(a) The chance that the child second child of Mary and Frank will have alkaptonuria = 1/2
(b) The chance that the third child of Sara and James will be free of the condition = 3/4
(c)
(d) If someone has no family history of the disorder, their genotype would be AA.
AA x aa
4 Aa
<em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history </em>= 0
(e)
(f) <em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history</em> = 0
<span>Homologs that are heterozygous for a reciprocal translocation undergo unorthodox synapsis during meiosis and form a cruciform, or crosslike, configuration, in which regions of homologous chromosomes pair.</span>
To design an experiment, you must set all other variables constant. These may include the environment, soil type, plant/flower type, water treatment and other essential variables. The only parameter you should vary is the soil temperature.
The correct answer is C.nematocyst. :))
The answer is B.
In general, the best way to find scientific answers to questions is to do research. Sometimes, tests aren't always exactly repeatable, and especially not in a scenario like the one given.
