Answer:
by crossing the sheep with a homo-zygous recessive sheep for “fluff” alleles
Explanation:
In genetics, the term homo-zygous refers to an individual that carries two copies of the same gene variant or 'allele' for a given gene. An individual that is homo-zygous dominant carries two copies of the same dominant allele. A dominant allele is a gene variant that can mask the expression of a recessive allele in heterozygous individuals (i.e., individuals that carry one copy of the dominant allele and one copy of the recessive allele). In a test cross, an individual that is suspected to be heterozygous for a given gene is crossed with a homo-zygous recessive individual in order to examine the phenotypes of the offspring. In this case, if the sheep that is suspected to be heterozygous (i.e., hybrid) is really heterozygous for the fur gene (genotype Ff), then the phenotypic ratio of the testcross progeny (F1) would be 1:1, i.e. 50% of the F1 individuals would have the 'dominant fluffy fur' phenotype (genotype Ff) and 50% of the F1 individuals would have the 'recessive non-fluffy fur' phenotype (genotype ff). Conversely, if the sheep that is suspected to be heterozygous is homo-zygous dominant for the fur gene (genotype FF), then 100% of the F1 individuals would have the 'dominant fluffy fur' phenotype (genotype Ff).
Given merely 40 butterflies were marked, assumed that there were multiple captures of both marked and unmarked butterflies, that the butterflies caught in traps were on the loose to be caught again. There are two mathematical solutions for this, both yielding the same answer which is 100.
• First, to each marked butterfly was taken twice (40 marked X2 = 80 captured) then of the unmarked butterflies the 120 captured must relate to 60 actual butterflies. In which 40 + 60 = 100.
• Secondly, by means of ratios in which 80/200 = 40/X. In this case X also = 100 that will result to the estimated size of the population of wilson park is 100.
Answer:
The correct answer is:
which of the blood type forms when an individual receives one copy of each allele? (D)
Explanation:
Alleles are each of the alternative forms of a gene. In this example, the two forms of the alleles for the Rhesus (Rh) factor are Rh+ and Rh-. These alleles can either be expressed as h0m0zygous alleles (two of the same kind; Rh+ Rh+, Rh- Rh-) or heterozygous alleles (a pair made up of both; Rh+ Rh-)
In the h0m0zygous state, there is the expression of the allele that makes up the pair. However, in the heterozygous state, the dominant allele is expressed phenotypically, even in the presence of the recessive allele that makes up the genotype. Therefore, the dominant allele is the resulting blood group seen in an individual in a heterozygous (one copy of each) state.
Answer:
DNA is double-stranded, RNA is single-stranded. DNA has the base Thymine, RNA replaces it with Uracil. DNA has deoxyribose sugar, RNA has ribose sugar.
Explanation:
How tall you are is determined by your genes and is widely left up to chance. It's very difficult to predict someone's height because of this.
