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ira [324]
3 years ago
14

Suppose you examined a pedigree of a large family, going back 6 generations. In generation 5, a woman ("G5W") has a serious gene

tic disease--its first incidence in the family. In the next generation, three of her offspring--two boys and one girl--are affected, with one daughter unaffected. What is the most likely explanation?(A) G5W's parent--the one who married into the family--carried the disease allele (but wasn't affected), and it is autosomal dominant.(B) A mutation in one of the G5W's parents, during gamete formation, created an X-linked dominant disease allele.(C) A mutation in G5W created an autosomal dominant disease allele.(D) The disease allele is recessive and X-linked; G5W's spouse also has the allele.
Biology
1 answer:
Westkost [7]3 years ago
6 0

B: A mutation in one of G5W's parents, during gamete formation, created an X-linked dominant disease allele.

You need to analyze the sex gametes.

Boys are XY

Girls are XX

If you have an X-linked dominant disease you need only one affected X gamete to have the disease.

The mother has XX' where X' is de affected and reproduce with a healthy man XY and breed unhealthy boys, but because of the heterozygous gametes you could also have healthy ones XX and XY

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Why is it essential that the regulatory mechanisms that activate glycogen synthesis also deactivate glycogen phosphorylase?
Marta_Voda [28]

Answer:

There are two pathways occur in the same cellular compartment, and, if both are on at the same time, a futile ATP hydrolysis cycle results. Using the same mechanism to turn them on/off or off/on is highly efficient.

- "Glycogen Phosphorylase" activity can be allosterically controlled ATP and G6P allosteric inhibitors, AMP allosteric activator as well as, controlled through covalent modification, phosphorylation and via hormones.

- Reaction Catalyzed by Glycogen Synthase:

The activity of glycogen synthase is subject to the same type of covalent modification as glycogen phosphorylase, however, the response is opposite. Glycogen Synthase is activated by G6P. It is also controlled via hormones.

5 0
3 years ago
Match each image with the life function the organism is performing.
Sholpan [36]
Um there is no picture. I would love to help you though
3 0
3 years ago
NEED HELP ASAP!!!!!
Brilliant_brown [7]

1. The right answer is electron.

The electron, one of the components of the atom with neutrons and protons, is an elementary particle that has an elementary charge of negative sign. It is fundamental in chemistry because it participates in almost all types of chemical reactions and is an essential element of the bonds present in molecules.

The mass of an electron is 9.109 × 10-31 kg. The electron is about 2000 times lighter than the proton and neutron in the nucleus. The masses of the proton and the neutron are almost identical (10-27 kg).

2. The right answer is rapidly moving electrons.

The chemical, physical and electrical properties of an atom are related to the number of protons in the nucleus, which determines the number of electrons in the electron cloud.

The electron cloud is formed of electrons rotating at high speed around the nucleus in very complex trajectories. The electronic cloud is composed of electrons so its electric charge is always negative.

3. The right answer is Atoms of the same element can have different numbers of neutrons.

Isotopes (of a certain chemical element) are called the nuclides sharing the same number of protons (characteristic of this element), but having a different number of neutrons.

So what characterizes an element is the number of protons.

By extension, isotope is often called a nuclide characterized by its number of protons Z and its number of neutrons N (or its mass number A = Z + N), but without distinction regarding its spin or energy state.

4. The right answer is 8.

The atomic number (Z) is the term used in chemistry and physics to represent the number of protons in an atom. An atom can be schematized as a first approach by a compact agglomeration (atomic nucleus) of protons (p +) and neutrons (n), around which circulate electrons (e-).

5. The right answer is 18.

The relative atomic mass (or atomic weight) is the mass of an atom in particular or a chemical element in general (in which case an isotopic mixture is envisaged) expressed as a multiple of a reference elementary mass that wants to be close to that of a single nucleon. Indeed the mass of an atom is proportional in first approximation to the number of its nucleons (protons and neutrons), said number of mass.

4 0
3 years ago
Fruit Flies, long wings (L) are dominat to short wings (l) show the results crossing a heterozygous with a long wing fly with a
GREYUIT [131]

Answer:

Fruit Flies, long wings (L) are dominant to short wings (l) show the results crossing a heterozygous with a long wing fly with a short wing fly What are the possible genotypes and phenotypes for this offspring?

Ll x Ll= LL, Li, Li and ii

2 homozygous (one is long wing fly and the other is short wing fly) and 2 dominant heterozygous

the genotype is 3:1  while the phenotype reflects 3 dominant long wing fly and 1 short wing fly

Explanation:

6 0
3 years ago
A pure-line green-seeded plant is crossed with a heterozygous plant. What do you expect in the progeny? Assume the givens of the
anzhelika [568]

Answer:

50% green-seed individuals vs. 50% yellow-seed individuals.

Explanation:

Mendel is known as father of genetics. He explained the concept of dominance, the law of segregation and the law of independent assortment while working on pea plant.

Green seed color is recessive and yellow seed color is dominant. A pure green line seed plant (ss) is crossed with heterozygous plant (Ss). The cross is as follows:

Parents   ss (green seed)   ×     Ss (Yellow seed)

Gametes   s                                  S, s

progeny:  Ss, Ss, ss, ss.

Here, Ss is yellow seed and ss is green seed.

50% green-seed individuals vs. 50% yellow-seed individuals are formed after the cross.

Thus, the correct answer is option (a).

7 0
3 years ago
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