Answer:
Explanation:
DNA is composed of two side-by-side chains (“strands”) of nucleotides twisted into the shape of a double helix. ...
The bases are attached to the 1′ carbon of each deoxyribose sugar in the backbone of each strand. ...
The association of A with T and G with C is through hydrogen bonds
The arrangement of the autosomes and that of sex chromosomes in the pairs is known as karyotype.
A karyotype test looks at the size, of the shape, and the number of your chromosomes. the Chromosomes are the parts of your cells that has contain your genes. Genes are the parts of the DNA passed down from your mother and the father. They also carry the information that determines your unique traits, such as the height and the eye color.
A karyotype test also examines the blood or the body fluids for the abnormal chromosomes. It's is often used to detect the genetic diseases in unborn babies still the developing in the womb.
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Answer:
Hyoid bone
Explanation:
It is a bone responsible for tongue movement.
Mosses and ferns are seedless plants. They reproduce via the use of spores. The correct answer is C.
Answer:
The genes are linked, and the arrangement is coupled (one homolog has both dominant alleles; the other homolog has both recessive alleles).
RY
/
ry
Explanation:
R_= colored aleurone
rr= colorless aeurone
Y_= green plant
yy= yellow plant
They do a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits (yr/yr) the following F1 is obtained:
- 88 Colored, green (RY/ry)
- 92 colorless, yellow (ry/ry)
- 8 colorless, green (rY/ry)
- 12 colored, yellow (Ry/ry)
If the genes assorted independently, all of the possible offspring phenotypes would appear in the same frequency. However, they obtained 2 phenotypes much more abundant that the other two. Since recombination is a rare event during crossing over, when two genes are linked the recombinant gametes are produced less frequently than the parentals.
We can propose that the phenotypes Colored, green (RY) and colorless yellow (ry) are the parental gametes, and the unknown plant has the arrangement RY/ry, with both genes linked.
