If you want to be absolutely certain that you will find the solution to the problem you know is solvable, you should use

Pedigrees are used to help geneticists understand how traits are inherited between generations. The Romanovs, a Russian royal fa

svet-max [94.6K]

The question is the following :
<span>What is the best evidence to prove that Irene was heterozygous for hemophilia?
A) Alice carried the recessive allele.
B) Alexandra carried the recessive allele.
C) Frederick carried the recessive allele.
D) Waldemar carried the recessive allele.

The correct answer is A

In the pedigree, marked with blue are the carriers of the X recessive allele ( they have one X that has the mutation and the other that doesn't).
Alice was Irene's' mother, and since both Alice and iIrene have the allele, it is safe to conclude that Irene inherited the recessive allele from Alice.</span>

6 0

3 years ago

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An enlarged prostate could cause which of the following to occur?

7nadin3 [17]

The answer is a the first one.

8 0

3 years ago

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What technology are scientists using to search for other planets? How are they using this technology to identify other planets?

Anni [7]

They use radiometry and pyrometry

NASA uses the Transiting Exoplanet Survey Satelite (TESS) telescope that employes this technology

This telescope measures the brightness/luminosity of stars. When this brightness drops regularly, every more or less in the same number of years, then there is the likelihood of a planet orbiting the star. The dip in brightness of the star is directly proportional to the size of the planet and the distance between the star and the orbiting planet.

3 0

3 years ago

Further microscopic analysis of negatively stained specimens reveals a colorless ring around each of the spherical cells against

Tanya [424]

Answer:

b. a capsule

Explanation:

The capsule is mainly made up of polysaccharides and surrounds many bacteria. Capsule staining includes mixing of the bacterial cells with dye and spread out in a thin film on a slide. After air-drying, the cells appear as light-colored structures present in a relatively dark blue-black background. This occurs since the dye particles cannot penetrate either the cell or its capsule. Therefore, the given slide with a colorless ring around the cells in a dark background represents the presence of a capsule around the observed cells.

7 0

3 years ago

PLS HURRY!

OLga [1]

Answer:

D- Phylogenetic Tree

Explanation:

It's in the definition of the word, no real explanation.

6 0

3 years ago