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Leto [7]
2 years ago
8

32 POINTS!!

Biology
1 answer:
Anni [7]2 years ago
7 0

Answer: A both isotopes contain 15 protons.

Explanation:

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In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes orange color. The heterozygote i
allochka39001 [22]

Answer:

A) tortoiseshell female; black male

Explanation:

Females have two X chromosomes and males have an X and a Y chromosome.

<u>The possible genotypes and phenotypes are</u>:

  • XᵒXᵒ: black female
  • XᵒY: black male
  • XᴼXᴼ: orange female
  • XᴼY: orange male
  • XᵒXᴼ: tortoiseshell female

<u>Cross of a black female and an orange male</u>

<h3>XᵒXᵒ  x  XᴼY</h3>

The female only produces Xᵒ gametes. The male produces Xᴼ and Y.

The possible offspring therefore is:  XᵒXᴼ (tortoiseshell females) and XᵒY (black males). The answer is A.

5 0
3 years ago
Which of the below is true about Brazil's Araucaria trees?
PilotLPTM [1.2K]

Answer:

d.They are still very common ,but threatened with increasing harvesting for timber.

Explanation:

Brazil's Araucaria trees:

   These trees are very soft and can be cut so easily.Brazilian pines is also know as Araucaria tree.

Before 1950's or 60's the number of trees were more but now due to harvesting the number of trees become less.The these trees are used for timber and for glue also.

In the present time the availability of these trees threatened with increasing harvesting for timber.

So the our option d is correct.

8 0
2 years ago
ASAP need answer fast!!!
Debora [2.8K]

Answer:

It enters fish through the gills and the female attaches to the tongue, with the male attaching on the gill arches beneath and behind the female. Females are 8–29 millimetres (0.3–1.1 in) long and 4–14 mm (0.16–0.55 in) wide.

Explanation:

Mark me as brainliest

4 0
2 years ago
Which of the following statements correctly describes a DIFFERENCE between the endocrine and nervous systems, which both communi
scoray [572]

Answer:

b is correct

Explanation:

6 0
2 years ago
(b) Vaccination against the measles virus will not protect the child against the rubella virus. Why?
vekshin1
The measles virus and rubella virus are two separate viruses. They have different DNA and RNA structures, and the vaccination for the measles virus only "knows" how to attach itself to measles and destroy the virus. It doesn't know how to attach itself to the rubella virus to destroy it, as the vaccination is needed to inform it how to.

The advantage of vaccinating a large amount of the population is that it reduces the chance someone will catch sickness by a great amount, and can possibly eradicate the virus.
8 0
3 years ago
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