Answer:
What is the name of this website
or the book?
Answer:
This question lacks options, the options are:
A. Only recessive alleles are inherited from homozygous parents.
B. Dominant alleles grow weaker as they are passed from parents to offspring.
C. Only the parent with a dominant allele can pass that allele to offspring in sexual reproduction.
D. A heterozygous parent has an equal chance of passing either the dominant allele or the recessive allele to offspring.
The answer is D
Explanation:
This question involves a single gene coding for hair length in dogs. The allele for short hair (S) is dominant over the allele for long hair (s). This means that allele 'S' will always mask the phenotypic expression of allele 's' in a heterozygous state.
According to the question, two heterozygous dogs (Ss) were crossed to produce 6 shortt-haired offsprings and 2 long-haired offsprings. An heterozygous organism is that which contains two different alleles for a particular gene i.e. a combination of dominant and recessive alleles.
Based on this, during meiosis or gamete formation, an heterozygous dog (Ss) will produce gametes with the short hair allele (S) and long hair allele (s) in equal proportion i.e. 50-50. When the two gametes containing the recessive alleles (s) produced by each heterozygous parent fuses, an offspring with a recessive phenotype (long hair, ss) is produced.
Hence, a long-hair
phenotype can appear in the offspring of two short-haired dogs because a heterozygous parent has equal chance of passing either the dominant or recessive allele to the offspring.
True guards cells open during the day
to keep your body functioning and active depending on the hormones
<h2>
Correct Answer is (C)</h2>
Explanation:
(C) Use of reporter genes
- <em>Reporter gene</em> A quality that is utilized to<em> 'tag' </em>another quality or DNA succession of interest, for example, <em>an promoter</em>
- Expression of the correspondent is handily observed, and allows the function or whereabouts of the<em> 'target' sequence</em> to be tracked.It have a two type of reporter gene such as scorable reporter gene and selector gene
- Scorable reporter gene - The gene have expression of this result in quantifiable phenotype and easily detected through highly<em> sensitive enzymes assays </em>
- Selector gene- The gene expression<em> resistance to a toxin</em> and selection of tranformants from <em>non tranformants in growth media containing selective agents </em>
