Which combination of sex chromosomes results in a male human being?
1 XX
2 YY
3 XY
4 either XX or YY
is it a?
Answers to the whole practice test:
C
D
D
B
A
A
B
B
D
B
C
C
A
D
C
B
C
I got 100% :)
^^^ Yes answers to Practice Test are correct above
1. Which combination of sex chromosomes results in a male human being?
XX-(this female)
YY
XY**(this is male)
either XX or YY
2. How does a geneticist use pedigrees?
A.) to create genetic crosses
B.) to replicate identical strings of DNA
C.) to prove that sex-linked traits are caused by codominant alleles
D.) to trace the inheritance of traits in humans**
3. Cloning results in two organisms that are
both adult mammals.
produced from cuttings.
genetically similar.
genetically identical.**
4. Which of these is an example of the benefits of genetic engineering?
A.) crossbreeding to create disease-resistant crops
B.) creating human insulin to treat people with diabetes** changing genetics- pharmaceutical companies have created many benefits using genetic engineering.
C.) analyzing karyotypes and pedigree charts
D.) growing a new plant from a cutting
5. Most sex-linked genes are found on
A.) the X chromosome. ** just think about sex linked being linked more to men and they only have 1 X chromosome, and that means that they don't have an other X chromosome to cover up the the missing or altered gene. Y chromosomes don't have as many genes on them, they are smaller.
B.) the Y chromosome.
C.) chromosome 21.
D.) all 23 pairs of chromosomes.
6. A carrier is a person who has
A.) one recessive and one dominant allele for a trait.**
B.) two recessive alleles for a trait.
C.) two dominant alleles for a trait.
D.) more than two alleles for a trait.
7. Breeders that cross genetically different individuals in hope of producing organisms with multiple desirable traits are using a technique called
A.) cloning.
B.) hybridization.** think breeders cross specific dogs that they think people will like to create a hybrid-dog a dog mixed with 2 different types to get certain traits that humans desire, or will buy from them. Labradadoodle- big dog, that is smart, but doesn't shed = family friendly
C.) genetic engineering.
D.) inbreeding.
8. What "produces egg and sperm" cells "during the life cycle" of a plant?
A.) gamete
B.) gametophyte **
C.) sporophyte
D.) zygote
9. In plants, sexual reproduction occurs when "sperm and egg **unite**" to form a
A.) gamete.
B.) gametophyte.
C.) sporophyte.
D.) zygote.**
10. A plant continues to grow throughout its life through the use of a process called
A.) alternation of generations.
B.) photosynthesis.** plants need photosynthesis to make it's own food!
C.) dormancy.
D.) germination.
11. Mammals whose young develop in a pouch on the mother’s body are called (think kangaroos in a pouch =marsupials)
A.) placental mammals.
B.) monotremes.
C.) marsupials.**
D.) gymnosperms.
12. Which is one advantage of sexual reproduction? (think sexual reproduction = humans, and humans have less off spring than a fish, and all humans are different in many ways...= genetic differences =variations)
A.) More offspring are produced.
B.) More offspring survive to maturity.
C.) The offspring have more genetic variation. **
D.) The offspring and the parents are identical.
13. Where does a placental mammal develop before its body systems can function independently? (placenta= human babies are developed in the placenta in a mothers belly, and a human is a mammal, and so a placental mammal would develop inside the mother's body before a mother has the baby, because before a baby is born the baby uses nutrients from the mother gained through the umbilical cord...)
A.) inside its mother’s body**
B.) in a pouch on its mother’s body
C.) in a nest near its mother
D.) inside an egg that is protected by the mother
14. What is the function of courtship behavior for an animal? (think about the birds that dance to attract a mate, and even a lot of humans like to watch people dance, it is done at weddings)
A.) to mark its territory
B.) to get a good supply of food
C.) to protect itself from predators
D.) to attract a mate of the same species**
15. Budding is a form of
(well think budding starts with plants)
A.) gestation.
B.) fertilization.
C.) asexual reproduction.**
D.) sexual reproduction.
16. Which is one advantage of external fertilization? (external happens outside of the body externally...therefore think fish...and you know fish have a lot of eggs that can be fertilized at one time)
A.) The offspring are genetically identical to the parents.
B.) More eggs can be fertilized at one time.**
C.) More sperm can be released at one time.
D.) More protection is available for developing zygotes.
17. Plants that have reproductive structures called cones are (angiosperms-think plants/flowers/seeds....the opposite of angio-sperms...gymno-sperms= plants that produce cones)
A.) angiosperms.
B.) gametophytes.
C.) gymnosperms.**
D.) sphorophytes.
dude you srsly just wrote all the out? talk about a hand cramp. XD
It's XY. Stop answering what a female is, and answer the question, not something else! Lol
I got 57% using theirs.
For the Connections Academy Unit 3 Lesson 4 Practice Test
1. C.
2.D.
3. D.
4. B
5. A.
6. A.
7. B.
8. B.
9. C.
10. C.
11. A.
12. D.
13. C.
14. B.
Looked at the test and put in the correct answers.
gotta 87% i missed clicked but yea they work thxs
i got 100%
Okay you all know that the question is which one means male so why are you all answering female? I dont get it!
Thanks: what
He/She is completely right! I got a 100% for the practice test on the reproductive system!!
The real answers are
1.C
2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C
People hear my warning these are the correct answers i got 70% using what's answers and if your in 6th grade these are correct.
Lesson 9: Reproduction and Development of Organisms Review
Science 6 B Unit 1: Reproduction and Development of Organisms
Connections Academy
1.C
2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C
@what is correct, I am just labeling their answers with the numbers!
for anyone in 2020 this test is different and shorter but it has the same answers and questions, so look for the question and the answers are correct '' Mr.Eliot '' is where your gonna search for the answers.
coming over from youtube..... this is a freaking mess
: )( : IS RIGHT I GOT A JUICY 100% I GIVE THE RIGHT ANSWERS PERIDOT WITH EXTRA TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
Thank you so much what!!!!
Xx is female.....
Thanks WHAT
yo lol thnks lot
Thank you Umm...
THNX CONNEXUS!!!!
100% correct no joke ty
Connexus i got 100% thx bro
Thank you sooo much!!
Now i can do my things properly!!
thx!!
1.c 2.D 3.D 4.B 5.A 6. A 7. B 8.B 9. D 10. B 11.C 12.C 13.A 14.D 15.C 16.B 17.C
@WHAT IS CORRECT FOR 7TH GRADE SCIENCE REPRODUCTION AND DEVELOPMENT OF ORGANIZIMS PRACTICE!!! TYSM @WHAT USE THIER ANSWERS FOR 7TH GRADE! I DON LIE TRUST ME 100% GO BACK UP AND USE THEIR ANSWERS IF YOU DONT YOU ARE LOST.
(⌐■_■) = ME
p.s I used my x-box username for my jiskha name :)
message me on x-box if you see this
Yall dudes and dudettes got 17 questions I only got 14
SIR WOMAN HAVE NIPPLES JSHIHDINCZIEFM
1. C.
2.D.
3. D.
4. B
5. A.
6. A.
7. B.
8. B.
9. C.
10. C.
11. A.
12. D.
13. C.
14. B.
1.C
2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C
These are correct for 8th grade pratice test.
Thanks @Connexus, He/She is correct i got a 100%
Tysm, BarneyCoochie❤❤
Ight then, thanks I needed to check my work.
@Kitten, ikr that takes balls. This dude is a legend.
#:)(: You didn't put them in order then because those answers are #Whats answers
got 100% on the test on my own and checked my answers here thanks!!
also dont worry if u get anything wrong on the test its just a practice and wont go toward ur grade.
solike
i got 25 questions on mines
so i f'd up and missed two, but thats okay, cause this stuff do be pretty easy :)) but yeah, stay safe and wash chu hands ^w^
:)(: is right for Unit 3 Lesson 9 8th grade science practice test
number one is xy
because if you where xx chromosomes you wouldn't have nipples
BUT @Connexus is right. You would believe in the toenail. You are a A SKINNY LEGEND if you do.
If you don't...
S M H