BIOLOGY HIGH SCHOOL

how might a scientist a determine  whether trait sex-linked by observing the offspring of several genetic crosses

Answers

Answer 1
Answer: They use Punnett squares to determine the sex traits or possibilities of having a boy or girl. They also determine the sex linked trait or the genes.

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BRAINLIEST TO FIRST CORRECT. 1. What can scientists learn about by studying Ice? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?2. What can scientists learn about by studying Chemical Isotopes In Foraminifera? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?3. What can scientists learn about by studying Fossilized Pollen Grains? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?4. What can scientists learn about by studying Tree Rings? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?
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Ralph's wants to breed two of his prize bulldogs. For the dominant alleles, he has selected small ears (E) and a curly tail (T). Linus, the male bullbog, is homozygous dominant for both traits. Lucy, the female, is heterozygous dominant for both traits. A. What are Linus's and Lucy's genotypes?
B. What percent of their pups will have small ears and curly tails?
C. What percent will have large ears (e) and straight tails (t)?

Answers

Answer:

a) Linus's  genotypes - EETT

Lucy's genotypes- EeTt

b) 100 percent of their pups will have small ears and curly tails

c) 0 percent of their pups will have large ears (e) and straight tails (t)
Okay, so we have one homozygous, the prefix "homo" means "same" and we know that the male's genotype is dominate, so with the prefix "same" or "homo" we know the male's genotype must be EE, and TT. We also know that the female's genotype is heterozygous, and knowing that "hetero" means opposite, we know that she has the two opposite types of genes Ee and Tt 

i hope this helps

An obstetrician knows that one of her patients is a pregnant woman whose fetus is at risk for a serious disorder that is detectable biochemically in fetal cells. The obstetrician would most reasonably offer which of the following procedures to her patient? A) CVS
B) ultrasound imaging
C) amniocentesis
D) blood transfusion
E) X-ray

Answers

The obstetrician would most reasonably offer procedure CVS (Chorionic Villus Sampling) to her patient. Therefore option A is correct.

CVS is a prenatal test performed between 10 to 13 weeks of pregnancy. It involves taking a small sample of cells from the placenta to analyze the fetal DNA for genetic disorders.

This procedure allows early detection of serious disorders, providing valuable information to the parents about the health of their fetus.  Ultrasound imaging can provide structural information about the fetus but may not detect biochemical disorders.

Amniocentesis is typically performed later in pregnancy and is used for different purposes. Blood transfusion and E) X-ray are not relevant to detecting fetal disorders.

Therefore option A is correct.

Know more about CVS:

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Definitely not XRAY (insert facepalm emoji) Most likely a Choroid villus sample but amniocentesis also seems reasonable. AHHH Amniocentesis is the answer :) Since it is used to see what is going on with the fetal cells.

Which of the following structures are used by prokaryotes for attaching to surfaces?a. capsule
d. nucleoid

Answers

The structure used by prokaryotes for attaching to surfaces is Capsule.

RoleofCapsuleinprokaryotes

Capsules are known to be the sticky outermost layer made up of polysaccharides.

Their role in prokaryotes include:

  • Aid prokaryotes to cling to each other.
  • Allows prokaryotes to attach to surfaces in their environment
  • Helps in preventing prokaryotic cell dehydration.

Therefore, the structure used by prokaryotes to attach to surfaces is the capsule.

Learn more about prokaryoteshere:

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capsule- This additional outer covering protects the cell and helps to adhere to surfaces and nutrients.

Is it possible for a guy and a dog to "mate'' and have a half dog and half human baby?

Answers

No, it is not possible for a guy and a dog to "mate''
and have a half dog and half human baby .
That's a silly question . . . but the answer is . . . no . . . cross breeding is not a possibility.

Carries sperm from the testis to the uretha

Answers

The Vas Deferens is the tube that carries sperm from the testes to the urethra.

Increased carbon in the oceans has caused the pH levels of the water to decrease. What is the largest impact of this ocean acidification on marine life?Increased coral bleaching
Increased fish predation
Increased marine bird migration distances
Increased marine mammal hibernation time

Answers

Answer:

Option (1)

Explanation:

The amount of carbon present in the ocean is inversely proportional to the pH level of water. This CO₂ amount present in the atmosphere may rise because of various types of human activities, that results in the increasing amount of dissolved CO₂ in the oceans. This in turn, again decreases the pH level of water. This water when reduces, it becomes saturated with the CO₂ and it also diminishes the source of calcium carbonate.  

The increase in the ocean acidification leads to the significant reduction of the reef-building corals. As a result of which the temperature of the water increases and they are not able to assemble their skeletal parts.

Hence, the correct answer is option (1).
Increased coral bleaching
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